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Air Ministry Official Notices

Air Ministry Official Notices Instruction s to Aeroplan e Owners and Ground Engineer s on Essential Modifications No . 32 of the yea r 1934 date d 1st October, 1934, and bearing the engines for which application is received after reference AJB/WES/1240, giving details of th e dates shown in th e tabl e below. Date of Airscrews to the undermentioned designs certain modifications to Dragon aeroplanes Ite m No. Description. Application. have been approved and additions should be which have been found necessary as a result of made to the appropriate Notices:— th e extensive service to which large numbers 227 (i) Wires cut case .. 15th October Drawin g Issue Diameter Pitch of aeroplanes of thi s type have been put. The 227(h) Relative strengt h of lift 15th October No . No. in fret in fret Remarks contents of this circular letter are t o be com­ and anti-lift wires. (i) Add the following new section to Notice municated by owners t o thei r ground engineers 227 (iii) Aileron strength re- 1st May No. 12 of 1931 :— concerned with the maintenance of Dragon quirements. "MOTH " (D.H.GOG) AEROPLANES aeroplanes. 228 Wires cut case for tai l 15th October (d) With Gipsy Major Engine unit 84723A/X.1 .. 7∙ 0 Owners of such aeroplanes or ground en­ 4∙84 — 84723A/X. 2 .. — 7∙ 0 5∙3 3 — 229 Type test s for engines in 15th October gineers concerned with their maintenance who 67104A/X.7 .. — 7∙ 0 4∙71 — th e Special category. have not ye t received a copy of this circular 67104A/X.10 .. — 7∙ 0 4∙ 6 — 231 Safety belts and har- 15th October letter, should accordingly apply to Messrs. d e 7∙ 0 Adjustabl e The pitch of ness on civil aircraft th e blades is Havilland, Stag Lane, Edgware, Middlesex. alway s to be 233 Use of bead typ e weight 1st May suc h as to The modifications dealt with in Sections B , on trailing aerials mee t the re­ C, an d D of th e above-mentioned circular letter quirement s of October 29, 1934. para . (1) (i) of are to be incorporated within the following N./A.O . & periods from the dat e of thi s Notice :— No . 36 of th e yea r 1934 N./A.O No . 36 / 1932 The airscrew shafts of certain Gipsy Major Section B .. .. three months D.H.5220/I I .. 6∙3 3 4∙92 — engines fitted with metal airscrews, have Section C .. .. two months . (ii) Add th e following design to Notice No. 4 become defective after various periods of Section D .. .. two months . of 1933:— service, due t o " fretting " of th e airscrew hu b Certificates of Airworthiness of th e aeroplanes AVRO 504K AEROPLANES on the shaft in the vicinity of th e rea r portion concerned will be liable to suspension or can­ (d) With Lucifer Engine of the keyway. cellation if the modifications have not been P.3I5 3 .. .. — 7∙75 5∙42 Lucifer IVA The engine constructors have issued a engine only effected within these periods. Certificates of circular letter t o owners of Dragon aeroplanes, Drawing Issue Diameter Pitch Airworthiness will not b e renewed and ground No . No. in feet in feet Remarks under reference AJB/JED/1305 and dated engineers must not sign Daily Certificates of (iii) Add the following design to Notice 25/10/1934, giving details of an essential in­ Safety for Fligh t in respect of such aeroplanes No. 11 of 1933 :— spection to be carried out on airscrew shafts after the expiration of the aforementioned "FOX MOTH " (D.H.83) AEROPLANES an d hubs on Gipsy Major engines fitted with periods, unless the modifications have been (b) With Gipsy Major Engine metal airscrews and installed in Dragon aero­ 67104A/X.1 4 . . — 7∙0 4∙52 — satisfactorily incorporated. planes. This lette r cancels previou s instructions. (iv) Add the following design to Notice Ground engineers also must not sign Daily Owners of such aeroplanes who have not No. 12 of 1933 :— received a copy of th e circular letter referred to Certificates of Safety for Flight in respect of "TIGE R MOTH " (D.H.82A) AEROPLANES in para. 2 above, should apply to the Do such aeroplanes unless the daily examinations (b) With Gipsv Major Engine called for under Sections A an d D of th e circular Havilland Aircraft Company, Ltd., Stag Lane, 67104A/X.10 . . — 7∙0 4∙6 — lette r have been carried out . Edgware, Middlesex. (v) Add the following designs t o Notice No. 8 October 25, 1934. The inspection operations referred to in the of 1934:— above-mentioned letter should be carried out BLACKBURN B.2 TOURER AND TRAINER without delay, and new typ e hubs, Part No. AEROPLANES No . 34 of the yea r 1934 1900-8B, embodied a t th e earliest opportunity, (a) With Gipsy III Engine Amendmen t List No. 40 t o th e Airworthiness S4265A/X. 3 .. — 7∙0 4∙53 — bu t in no case later than three months from Handbook for Civil Aircraft (Air Publication (d) With Hermes IV A Engine th e date of this Notice. S4265A/X.2 .. — 7∙0 5∙07 — 1208) has been issued, price 2d. net or 2½d. Certificates of Airworthiness will not be 84265A/X. 3 .. — 7∙0 4∙03 — pos t free. renewed and ground engineers must not sign October 10, 1934. Daily Certificates of Safety for Flight in respect Attentio n is particularly directed to the No . 33 of the yea r 193 4 of the aeroplanes concerned unless the above following amendments introduced by this conditions have been complied with. Messrs. de Havilland have issued a circular amendmen t list. These modified requirements letter to owners of Dragon, D.H.84, aeroplanes will be applicable to new typ e aeroplanes or November 6, 1934. 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 6 (12): 1 – Dec 1, 1934
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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb029885
Publisher site
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Abstract

Instruction s to Aeroplan e Owners and Ground Engineer s on Essential Modifications No . 32 of the yea r 1934 date d 1st October, 1934, and bearing the engines for which application is received after reference AJB/WES/1240, giving details of th e dates shown in th e tabl e below. Date of Airscrews to the undermentioned designs certain modifications to Dragon aeroplanes Ite m No. Description. Application. have been approved and additions should be which have been found necessary as a result of made to the appropriate Notices:— th e extensive service to which large numbers 227 (i) Wires cut case .. 15th October Drawin g Issue Diameter Pitch of aeroplanes of thi s type have been put. The 227(h) Relative strengt h of lift 15th October No . No. in fret in fret Remarks contents of this circular letter are t o be com­ and anti-lift wires. (i) Add the following new section to Notice municated by owners t o thei r ground engineers 227 (iii) Aileron strength re- 1st May No. 12 of 1931 :— concerned with the maintenance of Dragon quirements. "MOTH " (D.H.GOG) AEROPLANES aeroplanes. 228 Wires cut case for tai l 15th October (d) With Gipsy Major Engine unit 84723A/X.1 .. 7∙ 0 Owners of such aeroplanes or ground en­ 4∙84 — 84723A/X. 2 .. — 7∙ 0 5∙3 3 — 229 Type test s for engines in 15th October gineers concerned with their maintenance who 67104A/X.7 .. — 7∙ 0 4∙71 — th e Special category. have not ye t received a copy of this circular 67104A/X.10 .. — 7∙ 0 4∙ 6 — 231 Safety belts and har- 15th October letter, should accordingly apply to Messrs. d e 7∙ 0 Adjustabl e The pitch of ness on civil aircraft th e blades is Havilland, Stag Lane, Edgware, Middlesex. alway s to be 233 Use of bead typ e weight 1st May suc h as to The modifications dealt with in Sections B , on trailing aerials mee t the re­ C, an d D of th e above-mentioned circular letter quirement s of October 29, 1934. para . (1) (i) of are to be incorporated within the following N./A.O . & periods from the dat e of thi s Notice :— No . 36 of th e yea r 1934 N./A.O No . 36 / 1932 The airscrew shafts of certain Gipsy Major Section B .. .. three months D.H.5220/I I .. 6∙3 3 4∙92 — engines fitted with metal airscrews, have Section C .. .. two months . (ii) Add th e following design to Notice No. 4 become defective after various periods of Section D .. .. two months . of 1933:— service, due t o " fretting " of th e airscrew hu b Certificates of Airworthiness of th e aeroplanes AVRO 504K AEROPLANES on the shaft in the vicinity of th e rea r portion concerned will be liable to suspension or can­ (d) With Lucifer Engine of the keyway. cellation if the modifications have not been P.3I5 3 .. .. — 7∙75 5∙42 Lucifer IVA The engine constructors have issued a engine only effected within these periods. Certificates of circular letter t o owners of Dragon aeroplanes, Drawing Issue Diameter Pitch Airworthiness will not b e renewed and ground No . No. in feet in feet Remarks under reference AJB/JED/1305 and dated engineers must not sign Daily Certificates of (iii) Add the following design to Notice 25/10/1934, giving details of an essential in­ Safety for Fligh t in respect of such aeroplanes No. 11 of 1933 :— spection to be carried out on airscrew shafts after the expiration of the aforementioned "FOX MOTH " (D.H.83) AEROPLANES an d hubs on Gipsy Major engines fitted with periods, unless the modifications have been (b) With Gipsy Major Engine metal airscrews and installed in Dragon aero­ 67104A/X.1 4 . . — 7∙0 4∙52 — satisfactorily incorporated. planes. This lette r cancels previou s instructions. (iv) Add the following design to Notice Ground engineers also must not sign Daily Owners of such aeroplanes who have not No. 12 of 1933 :— received a copy of th e circular letter referred to Certificates of Safety for Flight in respect of "TIGE R MOTH " (D.H.82A) AEROPLANES in para. 2 above, should apply to the Do such aeroplanes unless the daily examinations (b) With Gipsv Major Engine called for under Sections A an d D of th e circular Havilland Aircraft Company, Ltd., Stag Lane, 67104A/X.10 . . — 7∙0 4∙6 — lette r have been carried out . Edgware, Middlesex. (v) Add the following designs t o Notice No. 8 October 25, 1934. The inspection operations referred to in the of 1934:— above-mentioned letter should be carried out BLACKBURN B.2 TOURER AND TRAINER without delay, and new typ e hubs, Part No. AEROPLANES No . 34 of the yea r 1934 1900-8B, embodied a t th e earliest opportunity, (a) With Gipsy III Engine Amendmen t List No. 40 t o th e Airworthiness S4265A/X. 3 .. — 7∙0 4∙53 — bu t in no case later than three months from Handbook for Civil Aircraft (Air Publication (d) With Hermes IV A Engine th e date of this Notice. S4265A/X.2 .. — 7∙0 5∙07 — 1208) has been issued, price 2d. net or 2½d. Certificates of Airworthiness will not be 84265A/X. 3 .. — 7∙0 4∙03 — pos t free. renewed and ground engineers must not sign October 10, 1934. Daily Certificates of Safety for Flight in respect Attentio n is particularly directed to the No . 33 of the yea r 193 4 of the aeroplanes concerned unless the above following amendments introduced by this conditions have been complied with. Messrs. de Havilland have issued a circular amendmen t list. These modified requirements letter to owners of Dragon, D.H.84, aeroplanes will be applicable to new typ e aeroplanes or November 6, 1934.

Journal

Aircraft Engineering and Aerospace Technology – Emerald Publishing

Published: Dec 1, 1934

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