- Model
- H-391B
- Data sheet
- TCDS1A8
- Registered aircraft
- 16 matched by model
- Product
- Aircraft · Small airplane
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 | 18 KB | 28008f67…7215769 | FAA DRS (API key needed) |
On this page
The airworthiness directive
58-01-04 HELIO: Applies to Model H-391B Aircraft, Serial Numbers 003 to 063 Inclusive.
Several aileron-interceptor actuator bellcranks have been found to be cracked. Accordingly, the following inspection and replacement programs are required as indicated.
Compliance required within the next 100 hours.
Visually inspect the aileron-interceptor actuator bellcranks at the attachment of the control cables. Cracked bellcranks must be replaced.
(Helio Service Bulletin No. 16 covers this subject.)
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 16
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1954 | 1 |
|---|---|
| 1956 | 5 |
| 1957 | 3 |
| 1958 | 3 |
4 with no year recorded