- Effective
- November 5, 1970
- Models
- Phoebus A1, Phoebus B1, Phoebus C
- Data sheet
- TCDSG16EU
- Registered aircraft
- 14 matched by model
- Product
- Aircraft · Glider
- Amendment
- 39-1088
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 |
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| FAA DRS HTML | 19 KB | 9d17c71c…b8f91ee | FAA DRS (API key needed) |
On this page
The airworthiness directive
70-21-03 ENTWICKLUNGSGEMEINSCHAFT: Amendment 39-1088. Applies to Model "PHOEBUS" A1, B1, and C Sailplanes up to and including S.N 934 which have a brake chute installed.
To prevent the rudder from becoming blocked by the back-slipping chute coupling, within the next 100 hours' time in service after the effective date of this AD, unless already accomplished, replace the chute coupling with a modified coupling in accordance with Messerschmitt - Bolkow - Blohm Service Bulletin No. Phoebus-1/70 dated April 1970, or later LBA-approved issue or an FAA-approved equivalent.
This amendment becomes effective November 5, 1970.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 14
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1965 | 1 |
|---|---|
| 1966 | 1 |
| 1967 | 3 |
| 1968 | 2 |
| 1969 | 3 |
4 with no year recorded