- Models
- Auxiliary Power Units, 240 Series, 340, 440
- Registered aircraft
- 12 matched by model
- Product
- Appliance
- Amendment
- 39-936
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 | 20 KB | 08dc15ad…11f16b2 | FAA DRS (API key needed) |
On this page
The airworthiness directive
70-03-07 AIRESEARCH: Amdt. 39-936. Applicable to operators of aircraft with AiResearch model GTP30-141 Auxiliary Power Units installed, including but not limited to, those Convair 600/640 aircraft listed in AiResearch Telegraphic Bulletin No. 49-A1838, dated January 17, 1970, or later FAA approved revisions.
Within ten (10) hours time in service, install a placard in full view of the pilot, to read: "Operation of the APU is prohibited in flight, except in emergency. Operate the APU at no load for at least one minute before shutdown." This placard may be removed when the APU is replaced with APU modified to series 4 or Change 5 in accordance with AiResearch Telegraphic Service Bulletin No. 49-A1838, dated January 17, 1970, or later FAA approved revisions.
This amendment is effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated January 23, 1970.
Affected TCDS · 2
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 12
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1953 | 3 |
|---|---|
| 1955 | 3 |
| 1956 | 4 |
| 1958 | 1 |
1 with no year recorded