- Effective
- April 13, 1983
- Models
- BAC 1-11 200 Series, BAC 1-11 400 Series
- Data sheet
- TCDSA5EU
- Product
- Aircraft · Large airplane
- Amendment
- 39-4608
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.
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On this page
The airworthiness directive
68-14-03 R1 BRITISH AIRCRAFT CORPORATION: Amendment 39-619 as amended by Amendment 39-4608. Applies to Model BAC 1-11 200 and 400 Series airplanes.
Compliance required as indicated, unless already accomplished.
To prevent erratic functioning of the rudder and elevator feel simulator units and to provide a warning to the flight crew in the event of a malfunctioning of the rudder or elevator feel simulator units, accomplish the following:
(a) Deleted by Amendment 39-4608.
(b) For BAC 1-11 200 Series Airplanes.
Within the next 1,000 hours' time in service after the effective date of this AD, replace the 1/4 inch diameter hydraulic pipe run between the roof of the main undercarriage bay and the rear pressure bulkhead in the No. 1 and No. 2 hydraulic systems with either 5/16 inch or 3/8 inch diameter pipe, in accordance with British Aircraft Corporation Service Bulletins Nos. 29- PM3234 Revision 1 dated December 1, 1967, or 29-PM3345 Revision 3 dated February 28, 1968, or later ARB-approved revision or an equivalent approved by the Manager, Aircraft Certification Staff, AEU-100, Europe, Africa and Middle East Office, FAA, c/o American Embassy, 1000 Brussels, Belgium.
(c) For BAC 1-11 200 and 400 Series Airplanes.
Within the next 1,000 hours' time in service after the effective date of this AD replace the restrictor assembly Hobson P/N CHA 504-396 with new restrictor assembly Hobson P/N CHA 504-502 in the rudder and elevator feel simulator units in accordance with British Aircraft Corporation Service Bulletin No. 27-PM3371 dated February 28, 1968, or later ARB-approved revision or an equivalent approved by the Manager, Aircraft Certification Staff, AEU-100, Europe, Africa and Middle East Office, FAA.
(d) For BAC 1-11 200 and 400 Series Airplanes.
Within the next 3,000 hours' time in service after the effective date of this AD modify the rudder feel simulator system by incorporating a warning indicator assembly in accordance with British Aircraft Corporation Service Bulletin No. 27-PM3372 dated February 15, 1968, or later ARB-approved revision or an equivalent approved by the Manager, Aircraft Certification Staff, AEU-100, Europe, Africa and Middle East Office, FAA.
Amendment 39-619 became effective August 5, 1968.
This Amendment 39-4608 becomes effective April 13, 1983.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.