- Effective
- May 13, 1985
- Models
- BH.125 Series 400A, BH.125 Series 600A, DH.125 Series 1A, DH.125 Series 1A/R-522, DH.125 Series 1A/S-522, DH.125 Series 1A-522 and 6 more
- Data sheet
- TCDSA3EU
- Registered aircraft
- 26 matched by model
- Product
- Aircraft · Large airplane
- Amendment
- 39-5032
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 | 20 KB | c2467333…aa91d51 | FAA DRS (API key needed) |
On this page
The airworthiness directive
85-07-08 BRITISH AEROSPACE: Amendment 39-5032. Applies to Model HS/BH/DH 125 series airplanes with the serial numbers listed in the applicability statement of British Aerospace HS 125 Service Bulletin 23-21-(8765), dated March 22, 1983. Compliance is required within 180 days after the effective date of this AD, unless previously accomplished. To prevent failure of the audio communication system, accomplish the following:
A. Modify the power supply system in accordance with the accomplishment instructions of British Aerospace HS 125 Service Bulletin 23-21-8765, dated March 22, 1983.
B. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region.
C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD.
Thisamendment becomes effective May 13, 1985.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 26
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1968 | 1 |
|---|---|
| 1970 | 1 |
| 1971 | 1 |
| 1977 | 1 |
| 1978 | 1 |
| 1980 | 2 |
| 1981 | 1 |
| 1982 | 5 |
| 1984 | 1 |
12 with no year recorded