70-03-07: Auxiliary Power Units
FAA order 70-03-07 is an airworthiness directive. The FAA's subject line: Auxiliary Power Units. System: engine.
What it applies to as the FAA lists it
- Kind of product
- Appliance
- Makes
- Airesearch; Kelowna Flightcraft R & D Ltd.
- Models
- Auxiliary Power Units, 240 Series, 340, 440
Dates and paperwork
- Docket
- Unknown
- Status
- Current
- The FAA's document
- Read the order on the FAA's site
The order itself the regulatory text, as published
Show the full text (950 characters)
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.
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of November 6, 2026. Connections as data: /graph/directive/70-03-07.json · aircraft systems.