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Air Ministry Official Notices

Air Ministry Official Notices June, 1939 AIRCRAFT ENGINEERING Workshop and Production Section No . 5 of the yea r 1939 Part 1.—Type approval procedure for aircraft their Category "A " licences for compass adjust­ radio apparatus. (This is mainly of interest to ment , the fee should not be forwarded with the Civil Specification Memorandum No. 22 th e aircraft radio firms.) application form, as a fee will not be payable in 1. This Memorandum cancels the following Civil Part 1.—Approval and licensing procedure for those cases where the applicant is not required to Specification Memoranda :— th e installation of radio apparatus in aircraft. undergo a further examination. Civil Specification Memorandum No. 16. 3. The procedure described in Part 2 of the new 5. The syllabus for licences in Category "A " leaflet differs fundamentally from the current radio (Notice to Aircraft Owners and Ground Engineers shown in Air Ministry Pamphlet 34 should be installation approved practice, and its salient No. 26/1938.) amended as follows: features are as follows: Civil Specification Memorandum No. 17. Paragrap h 4 : (1) "Airworthiness approval" of a Type Sub-paragraph (iii).—Amend to read" Know­ (Notice to Aircraft Owners and Ground Engineers modification to an aircraft resulting from the ledge of the methods of inspecting the installa­ No. 30/1938.) installation of radio apparatus, is obtained by tion of the flying instruments. Civil Specification Memorandum No. 19. mean s of the usual procedure that applies to all Sub-paragraph (v).—Delete. (Notice to A ircraft Owners and Ground Engineers Typ e modifications (sec the Air Navigation Re-number sub-paragraph (iv) as sub­ No. 41/1938.) Directions, 1936 (A.N.D.13), paragraph 35, paragrap h (v) an d insert the following new sub­ Civil Specification Memorandum No. 21 . Design Leaflet A.3 of Air Publication 1208, and paragrap h (iv).—" (iv) Knowledge of the (Notice to Aircraft Owners and Ground Engineers Notice to Aircraft Owners and Ground Engineers method s of inspection of electrical services to No. 1/1939.) No . 33/1937). "Airworthiness approval" ensure correct assembly, condition and 2 . After cancellation of the above Memoranda, the following is a complete list of current Civil relates to the effect of the radio installation on functioning." Specification Memoranda :— th e weight, structure, e.g. position or flying March 28, 1939. Civil Specification Memorandum No. 3— " Dial characteristics of the aircraft, and is not required Instruments , Marking of." if th e same typ e of modification has been approved No . 8 of the yea r 1939 previously for incorporation in a similar aircraft. (Notice to Aircraft Owners and Ground Engineers 1. The undermentioned Civil Specifications have No. 5/1937.) (2) "Radi o approval " of a new aircraft radio now been issued and can be purchased, price 6d. Civil Specification Memorandum No. 18— statio n must be obtained before the necessary ne t per copy or 7d. post free, either direct from His licence will be granted by the General Post Office, British Standard Specification 89 : Ammeters, Majesty's Stationery Office at any of the following irrespective of whether the installation results in Voltmeters , Wattmeters , Frequency and Power- addresses:—Yor k House, Kingsway, London, a Typ e or Subsequent modification to th e aircraft. Facto r Meters." W.C.2 ; 120, George Street, Edinburgh, 2 ; 26, York (Notice to Aircraft Owners and Ground Engineers 4 . The scope of Part 2 of the new leaflet is Street, Manchester, 1; 1, St. Andrew's Crescent, No. 33/1938.) indicated by its paragraph headings which are Cardiff; 80, Chichester Street, Belfast; or through Civil Specification Memorandum No. 20— listed below: an y bookseller:— "Actio n to be taken by the applicant. " Lists of Approved Firms." 1A. Altimeters (this supersedes C.S. No. 1). Approval of the modification to the aircraft. (Notice to Aircraft Owners and Ground Engineers 22. Petrol Filters. Approva l of the radio station. No. 42/1938.) 23 . Oil Filters. Th e station licence. 3 . The following is a complete list of current April 13, 1939. Radi o flight tests. Civil Specifications:— Modification of an approved radio trans­ C.S. No. 1 (April, 1936).—Altimeters. mittin g station. C.S. No . 2 (April, 1936).—Air Speed Indicators. No . 10 of the year 1939 Installatio n of apparatus for reception only, C.S. No. 3A (Feb., 1938).—Pressure Heads for 1. The recent annual census of aircraft entered an d the modification of receiving stations. Air Speed Indicators. on the Register of British Aircraft registered in Initial and subsequent stations of the same C.S. No. 4 (April, 1936).—Engine Speed Indica­ Grea t Britain and Northern Ireland, has revealed type . tors . several instances where registered owners of aircraft Change of ownership. C.S. No. 5 (April, 1936).—Pressure Gauges for hav e failed to comply with the requirements of the For m cf approval. Oil and Fuel Systems. Air Navigation (Consolidation) Order, 1923, C.S. No. 6 (April, 1936).—Oil Temperature Cain citation Schedule I, paragraphs 3 an d 4, which provide that Thermometers . Notice to Aircraft Owners and Ground Engineers (a) changes in th e ownership of a registered aircraft, C.S. No. 7 (April, 1936).—Radiator Temperature No. 20/1938 will be cancelled as from 1st June, o r (b) the permanent withdrawal from use of an Thermometers . 1939. aircraft or its destruction, shall be notified to the C.S. No. 8A (May, 1937).—Rate of Turn Indica­ March 23. 1939. Air Ministry forthwith. The attention of owners tors . is accordingly drawn to the obligation imposed on C.S. No. 9 (April, 1936).—Magnetic Compasses. the m by these regulations. C.S. No. 10 (April, 1936).—Fire Extinguishers. No . 7 of th e year 1939 2. Provision for sending the appropriate notifica­ C.S. No. 11A (May, 1937).—Electrical Apparatus tion to the Department is made on page 3 of every 1. Hitherto, it has been the practice to endorse (Other than Wireless Apparatus). Certificate of Registration (C.A. For m 71). Ground Engineers' Licences in Category " A " to C.S. No. 12A (June, 1937) (as amended by April 14, 1939. enable the holders to perform certain extraneous Amendmen t List No. 1, after incorporation of duties in connexion with turn indicators, com­ which 12A becomes 12B).—Safety Harness, passes an d electrical services. Licences in Category Safety Belts and Lap Straps. " A " will in future bear no endorsement regarding No . 11 of the year 1939 C.S. No. 13 (April, 1936).—FirE-Resistance Tests. these functions, and existing endorsements will be C.S. No. 14 (Oct., 1936).—Directional Gyro. 1. It has been found that the safety pins which deleted as and when the licences are submitted to C.S. No. 15 (May, 1937).—Electrical Generators. secure the connecting rod between the front and th e Air Ministry for the purposes of renewal or C.S. No. 16 (June, 1938).—Artificial Horizons. rea r rudder bars in D.H. 60 "Moth " and D.H. 82 variation . C.S. No. 17 (June, 1938).—Longitudinal Incline "Tige r Moth" aeroplanes can bo displaced, 2. It will be observed from Notice to Aircraft Indicators . allowing the connecting rod to become uncoupled. Owners and Ground Engineers No. 35/1938 that C.S. No. 18 (June, 1938).—Oil Coolers. 2. To avoid this, th e safety pins must be replaced th e duties which may be performed by ground C.S. No. 19 (Nov., 1938).—Accumulator Cut-outs either by split pins and washers as shown in engineers licensed in Category "A " include: or Reverse Current Relays. Drawing No. M.5803, or by a spring-loaded locking Tur n Indicators.—Inspection of installation C.S. No. 20 (Nov., 1938).—Absolute Atmospheric catch as shown in Drawing No. M.6533. an d reporting of faults. Pressure Gauges. 3. Operators of the above aircraft who find it Compasses.—Inspection of installation and C.S. No. 21 (Nov., 1938).—Voltage Regulators. necessary to change frequently from dual to solo reportin g of faults. 4. Correction to Civil Specification No. 15. control will generally find it more convenient to Electrical Services.—Inspection of assembly, " Electrical Generators," paragraph 3 (ii), line 6 :— employ the spring-loaded locking catch, rather condition and functioning. Amend " British Standard Specification 170- tha n the split pin and washer. 3 . Any functions relating to turn indicators, 1930 " to read " British Standard Specification 4. The drawings referred to in paragraph 2, and compasses and electrical services other than those 170-1926." th e parts required to make the modification, may specified in paragraph 2 above must be performed be obtained on application to the de Havilland Cancellations b y a ground engineer licensed in Category "X. " Aircraft Co., Ltd. , Hatfield, Herts. Notices to Aircraft Owners an d Ground Engineers Th e more important duties in connexion with 5. The modification mentioned in paragraph 2 Nos. 26, 30 and 41/1938 and 1/1939 are hereby compasses and electrical services are already pro­ abov e must be embodied within three months of cancelled. vided for in sub-divisions of Category "X, " and th e date of this Notice. March 7, 1939. those in connexion with turn indicators will be 6. After the expiration of the above-mentioned covered by the sub-division " Inspection, repair, period, Certificates of Airworthiness of aeroplanes overhaul, testing and calibration of aircraft and concerned will be liable to suspension or cancella­ No . 6 of the year 1939 acro-engine instruments." (See Air Ministry tion, and ground engineers must not sign Daily 1. A revised edition of Design Leaflet A.7 will Pamphle t 34, para. 8.) Certificates of Safety for Flight in respect of such shortly be issued with Amendment List No. 5 to 4 . Ground engineers who desire to be licensed in aeroplanes unless the modification has been Volume I of the Airworthiness Handbook for Civil Category "X " to cover duties relating to turn satisfactorily carried out. Aircraft (A.P. 1208). It will take effect from indicators an d electrical services should complete an Cancellation 1st June, 1939, and a further Notice will be issued application form and forward the appropriate fee. a s soon as the Amendment List is available. Notice to Aircraft Owners and Ground Engineers In the case of applications to be licensed in Category No. 10/1937 is hereby cancelled. 2. The new leaflet will contain information on "X " for duties in connexion with compasses, by th e following subjects: April 14, 1939. individuals already licensed by endorsement on http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

Air Ministry Official Notices

Aircraft Engineering and Aerospace Technology , Volume 11 (6): 1 – Jun 1, 1939

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb030504
Publisher site
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Abstract

June, 1939 AIRCRAFT ENGINEERING Workshop and Production Section No . 5 of the yea r 1939 Part 1.—Type approval procedure for aircraft their Category "A " licences for compass adjust­ radio apparatus. (This is mainly of interest to ment , the fee should not be forwarded with the Civil Specification Memorandum No. 22 th e aircraft radio firms.) application form, as a fee will not be payable in 1. This Memorandum cancels the following Civil Part 1.—Approval and licensing procedure for those cases where the applicant is not required to Specification Memoranda :— th e installation of radio apparatus in aircraft. undergo a further examination. Civil Specification Memorandum No. 16. 3. The procedure described in Part 2 of the new 5. The syllabus for licences in Category "A " leaflet differs fundamentally from the current radio (Notice to Aircraft Owners and Ground Engineers shown in Air Ministry Pamphlet 34 should be installation approved practice, and its salient No. 26/1938.) amended as follows: features are as follows: Civil Specification Memorandum No. 17. Paragrap h 4 : (1) "Airworthiness approval" of a Type Sub-paragraph (iii).—Amend to read" Know­ (Notice to Aircraft Owners and Ground Engineers modification to an aircraft resulting from the ledge of the methods of inspecting the installa­ No. 30/1938.) installation of radio apparatus, is obtained by tion of the flying instruments. Civil Specification Memorandum No. 19. mean s of the usual procedure that applies to all Sub-paragraph (v).—Delete. (Notice to A ircraft Owners and Ground Engineers Typ e modifications (sec the Air Navigation Re-number sub-paragraph (iv) as sub­ No. 41/1938.) Directions, 1936 (A.N.D.13), paragraph 35, paragrap h (v) an d insert the following new sub­ Civil Specification Memorandum No. 21 . Design Leaflet A.3 of Air Publication 1208, and paragrap h (iv).—" (iv) Knowledge of the (Notice to Aircraft Owners and Ground Engineers Notice to Aircraft Owners and Ground Engineers method s of inspection of electrical services to No. 1/1939.) No . 33/1937). "Airworthiness approval" ensure correct assembly, condition and 2 . After cancellation of the above Memoranda, the following is a complete list of current Civil relates to the effect of the radio installation on functioning." Specification Memoranda :— th e weight, structure, e.g. position or flying March 28, 1939. Civil Specification Memorandum No. 3— " Dial characteristics of the aircraft, and is not required Instruments , Marking of." if th e same typ e of modification has been approved No . 8 of the yea r 1939 previously for incorporation in a similar aircraft. (Notice to Aircraft Owners and Ground Engineers 1. The undermentioned Civil Specifications have No. 5/1937.) (2) "Radi o approval " of a new aircraft radio now been issued and can be purchased, price 6d. Civil Specification Memorandum No. 18— statio n must be obtained before the necessary ne t per copy or 7d. post free, either direct from His licence will be granted by the General Post Office, British Standard Specification 89 : Ammeters, Majesty's Stationery Office at any of the following irrespective of whether the installation results in Voltmeters , Wattmeters , Frequency and Power- addresses:—Yor k House, Kingsway, London, a Typ e or Subsequent modification to th e aircraft. Facto r Meters." W.C.2 ; 120, George Street, Edinburgh, 2 ; 26, York (Notice to Aircraft Owners and Ground Engineers 4 . The scope of Part 2 of the new leaflet is Street, Manchester, 1; 1, St. Andrew's Crescent, No. 33/1938.) indicated by its paragraph headings which are Cardiff; 80, Chichester Street, Belfast; or through Civil Specification Memorandum No. 20— listed below: an y bookseller:— "Actio n to be taken by the applicant. " Lists of Approved Firms." 1A. Altimeters (this supersedes C.S. No. 1). Approval of the modification to the aircraft. (Notice to Aircraft Owners and Ground Engineers 22. Petrol Filters. Approva l of the radio station. No. 42/1938.) 23 . Oil Filters. Th e station licence. 3 . The following is a complete list of current April 13, 1939. Radi o flight tests. Civil Specifications:— Modification of an approved radio trans­ C.S. No. 1 (April, 1936).—Altimeters. mittin g station. C.S. No . 2 (April, 1936).—Air Speed Indicators. No . 10 of the year 1939 Installatio n of apparatus for reception only, C.S. No. 3A (Feb., 1938).—Pressure Heads for 1. The recent annual census of aircraft entered an d the modification of receiving stations. Air Speed Indicators. on the Register of British Aircraft registered in Initial and subsequent stations of the same C.S. No. 4 (April, 1936).—Engine Speed Indica­ Grea t Britain and Northern Ireland, has revealed type . tors . several instances where registered owners of aircraft Change of ownership. C.S. No. 5 (April, 1936).—Pressure Gauges for hav e failed to comply with the requirements of the For m cf approval. Oil and Fuel Systems. Air Navigation (Consolidation) Order, 1923, C.S. No. 6 (April, 1936).—Oil Temperature Cain citation Schedule I, paragraphs 3 an d 4, which provide that Thermometers . Notice to Aircraft Owners and Ground Engineers (a) changes in th e ownership of a registered aircraft, C.S. No. 7 (April, 1936).—Radiator Temperature No. 20/1938 will be cancelled as from 1st June, o r (b) the permanent withdrawal from use of an Thermometers . 1939. aircraft or its destruction, shall be notified to the C.S. No. 8A (May, 1937).—Rate of Turn Indica­ March 23. 1939. Air Ministry forthwith. The attention of owners tors . is accordingly drawn to the obligation imposed on C.S. No. 9 (April, 1936).—Magnetic Compasses. the m by these regulations. C.S. No. 10 (April, 1936).—Fire Extinguishers. No . 7 of th e year 1939 2. Provision for sending the appropriate notifica­ C.S. No. 11A (May, 1937).—Electrical Apparatus tion to the Department is made on page 3 of every 1. Hitherto, it has been the practice to endorse (Other than Wireless Apparatus). Certificate of Registration (C.A. For m 71). Ground Engineers' Licences in Category " A " to C.S. No. 12A (June, 1937) (as amended by April 14, 1939. enable the holders to perform certain extraneous Amendmen t List No. 1, after incorporation of duties in connexion with turn indicators, com­ which 12A becomes 12B).—Safety Harness, passes an d electrical services. Licences in Category Safety Belts and Lap Straps. " A " will in future bear no endorsement regarding No . 11 of the year 1939 C.S. No. 13 (April, 1936).—FirE-Resistance Tests. these functions, and existing endorsements will be C.S. No. 14 (Oct., 1936).—Directional Gyro. 1. It has been found that the safety pins which deleted as and when the licences are submitted to C.S. No. 15 (May, 1937).—Electrical Generators. secure the connecting rod between the front and th e Air Ministry for the purposes of renewal or C.S. No. 16 (June, 1938).—Artificial Horizons. rea r rudder bars in D.H. 60 "Moth " and D.H. 82 variation . C.S. No. 17 (June, 1938).—Longitudinal Incline "Tige r Moth" aeroplanes can bo displaced, 2. It will be observed from Notice to Aircraft Indicators . allowing the connecting rod to become uncoupled. Owners and Ground Engineers No. 35/1938 that C.S. No. 18 (June, 1938).—Oil Coolers. 2. To avoid this, th e safety pins must be replaced th e duties which may be performed by ground C.S. No. 19 (Nov., 1938).—Accumulator Cut-outs either by split pins and washers as shown in engineers licensed in Category "A " include: or Reverse Current Relays. Drawing No. M.5803, or by a spring-loaded locking Tur n Indicators.—Inspection of installation C.S. No. 20 (Nov., 1938).—Absolute Atmospheric catch as shown in Drawing No. M.6533. an d reporting of faults. Pressure Gauges. 3. Operators of the above aircraft who find it Compasses.—Inspection of installation and C.S. No. 21 (Nov., 1938).—Voltage Regulators. necessary to change frequently from dual to solo reportin g of faults. 4. Correction to Civil Specification No. 15. control will generally find it more convenient to Electrical Services.—Inspection of assembly, " Electrical Generators," paragraph 3 (ii), line 6 :— employ the spring-loaded locking catch, rather condition and functioning. Amend " British Standard Specification 170- tha n the split pin and washer. 3 . Any functions relating to turn indicators, 1930 " to read " British Standard Specification 4. The drawings referred to in paragraph 2, and compasses and electrical services other than those 170-1926." th e parts required to make the modification, may specified in paragraph 2 above must be performed be obtained on application to the de Havilland Cancellations b y a ground engineer licensed in Category "X. " Aircraft Co., Ltd. , Hatfield, Herts. Notices to Aircraft Owners an d Ground Engineers Th e more important duties in connexion with 5. The modification mentioned in paragraph 2 Nos. 26, 30 and 41/1938 and 1/1939 are hereby compasses and electrical services are already pro­ abov e must be embodied within three months of cancelled. vided for in sub-divisions of Category "X, " and th e date of this Notice. March 7, 1939. those in connexion with turn indicators will be 6. After the expiration of the above-mentioned covered by the sub-division " Inspection, repair, period, Certificates of Airworthiness of aeroplanes overhaul, testing and calibration of aircraft and concerned will be liable to suspension or cancella­ No . 6 of the year 1939 acro-engine instruments." (See Air Ministry tion, and ground engineers must not sign Daily 1. A revised edition of Design Leaflet A.7 will Pamphle t 34, para. 8.) Certificates of Safety for Flight in respect of such shortly be issued with Amendment List No. 5 to 4 . Ground engineers who desire to be licensed in aeroplanes unless the modification has been Volume I of the Airworthiness Handbook for Civil Category "X " to cover duties relating to turn satisfactorily carried out. Aircraft (A.P. 1208). It will take effect from indicators an d electrical services should complete an Cancellation 1st June, 1939, and a further Notice will be issued application form and forward the appropriate fee. a s soon as the Amendment List is available. Notice to Aircraft Owners and Ground Engineers In the case of applications to be licensed in Category No. 10/1937 is hereby cancelled. 2. The new leaflet will contain information on "X " for duties in connexion with compasses, by th e following subjects: April 14, 1939. individuals already licensed by endorsement on

Journal

Aircraft Engineering and Aerospace TechnologyEmerald Publishing

Published: Jun 1, 1939

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