79-02-03: Engine Restart
FAA order 79-02-03 is an airworthiness directive in force since January 29, 1979. The FAA's subject line: Engine Restart. It names Grumman G-21: about 35 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: engine.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Grumman American Aviation Corporation
- Models
- G-21A (Army OA-9, Navy JRF-1, -2, -3, -4, -5, and -6B)
- On this site
- Grumman G-21 35 registered
Dates and paperwork
- In force since
- January 29, 1979
- 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 (1,126 characters)
79-02-03 GRUMMAN: Amendment 39-3400. Applies to all G-21A aircraft that have been modified to incorporate Hartzell propellers and governor crossfeed systems in accordance with Supplemental Type Certificate No. SA1-52, and are certificated in all categories.
Compliance required within 50 hours' time in service or 15 days, whichever occurs first, after the effective date of this AD, unless previously accomplished.
To preclude the inability to restart an engine and the simultaneous loss of the remaining engine, install the following placard adjacent to the emergency unfeather valve in full view of the pilot and operate the aircraft thereafter in accordance with these terms:
"ENGINE RESTART: ATTEMPT RESTART USING STARTER. IF UNSUCCESSFUL,
1. ADVANCE PROP CONTROL LEVER TO FULL INCREASE RPM POSITION.
2. OPEN EMERGENCY UNFEATHER VALVE."
The placard lettering must be at least 1/8 inch in height and of a contrasting color.
Equivalent modifications maybe approved by the Chief, Engineering and Manufacturing Branch, FAA Great Lakes Region.
This amendment becomes effective January 29, 1979.
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 October 30, 2026. Connections as data: /graph/directive/79-02-03.json · aircraft systems.