- Effective
- May 3, 1978
- Models
- BH.125 Series 400A, BH.125 Series 600A, DH.125 Series 1A, DH.125 Series 1A-522, DH.125 Series 1A/R-522, DH.125 Series 1A/S-522 and 6 more
- Data sheet
- TCDSA3EU
- Registered aircraft
- 26 matched by model
- Product
- Aircraft · Large airplane
- Amendment
- 39-3170
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 January 21, 2026.
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 | c449d480…5c48b93 | FAA DRS (API key needed) |
On this page
The airworthiness directive
78-07-07 HAWKER SIDDELEY AVIATION, LIMITED: Amendment 39-3170. Applies to Model DH/BH/HS-125 airplanes, certificated in all categories, all series, up to and including the 700A series, but excluding all 700A series airplanes except S/N 0201, 0202, 0203, and 0204, and also excluding S/N 25/025.
Compliance is required as indicated, unless already accomplished.
To prevent possible lightning strike damage to the radome which could result in loss of the radome, within the next 150 hours time in service after the effective date of this AD, remove the lightning diverter strips from the radome and install new diverter strips in accordance with the section entitled "Accomplishment Instructions" and associated drawings of Hawker Siddeley Aviation, Limited, Modification Service Bulletin 53-50(2626), dated August 26, 1977, including Revision 1 (pages 1, 5, 6, and 8) dated October 4, 1977, or an FAA-approved equivalent.
This amendment becomes effective May 3, 1978.
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