- Effective
- October 18, 1986
- Models
- 214B, 214B-1, 214ST
- Registered aircraft
- 30 matched by model
- Product
- Aircraft · Rotorcraft
- Amendment
- 39-5427
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 | 21 KB | babe35b1…d618b18 | FAA DRS (API key needed) |
On this page
The airworthiness directive
86-20-06 BELL HELICOPTER TEXTRON, INC.: Amendment 39-5427. Applies to Bell Helicopter Textron, Inc., Model 214ST helicopters, S/N's 28101 through 28159, and Models 214B and 214B-1, S/N's 28001 through 28070, certificated in any category, equipped with main rotor drag brace assembly P/N 214-010-113-001.
Compliance is required as indicated, unless already accomplished.
(a) To prevent failure of the M/R drag brace assembly, P/N 214-010-113-001, on the Model 214ST helicopter, replace it with M/R drag' brace assembly, P/N 214-010-113-105, within the next 50 hours' time in service or within 30 days after the effective date of this AD, whichever comes first.
(b) To prevent failure of the M/R drag brace assembly, P/N 214-010-113-001 on the Model 214B and 214B-1 helicopters, replace it with M/R drag brace assembly, P/N 214-010-113- 107, within the next 50 hours' time in service or within 30 days after the effective date of this AD, whichever comes first.
(c) An alternate method of compliance which provides an equivalent level of safety with this AD may be used when approved by the Manager, Helicopter Certification Branch, Federal Aviation Administration, 4400 Blue Mound Road, Fort Worth, Texas 76106.
This amendment becomes effective October 18, 1986.
Affected TCDS · 2
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 30
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1976 | 2 |
|---|---|
| 1977 | 1 |
| 1978 | 3 |
| 1979 | 2 |
| 1981 | 3 |
| 1982 | 2 |
| 1983 | 1 |
| 1984 | 5 |
| 1987 | 1 |
| 1990 | 1 |
| 1991 | 2 |
| 1993 | 1 |
6 with no year recorded