- Effective
- March 23, 1970
- Models
- BAC 1-11 200 Series, BAC 1-11 400 Series
- Data sheet
- TCDSA5EU
- Product
- Aircraft · Large airplane
- Amendment
- 39-945
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
| File | Size | SHA-256 | Original |
|---|---|---|---|
| FAA DRS HTML | 19 KB | 5a8ea8c2…9ca22fc | FAA DRS (API key needed) |
On this page
The airworthiness directive
70-05-01 BRITISH AIRCRAFT CORPORATION: Amdt. 39-945. Applies to Model BAC 1- 11 200 and 400 series airplanes.
To prevent false indication of a retracted flap position which could result in a failure of the flap structure in flight, within the next 1500 hours' time in service after the effective date of this AD, unless already accomplished, modify the flap signalling mechanism and flap control unit in accordance with British Aircraft Corporation Model BAC 1-11 Service Bulletin No. 27-PM 3550, Revision 2, dated February 3, 1969, or later ARB-approved issue or an FAA-approved equivalent.
(British Aircraft Corporation Model BAC 1-11 Alert Service Bulletin No. 27-A-PM 3550, dated August 18, 1968, covers the same subject.)
This amendment becomes effective March 23, 1970.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.