52-28-02: Fuel Pump Relief Valve
FAA order 52-28-02 is an airworthiness directive. The FAA's subject line: Fuel Pump Relief Valve. It names Bellanca 14: about 282 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
- Bellanca Aircraft Corporation
- Models
- 14-13, 14-13-2, 14-13-3
- On this site
- Bellanca 14 282 registered
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 (490 characters)
52-28-02 BELLANCA: Applies to Models 14-13, 14-13-2, 14-13-3 Aircraft, Serial Numbers Up to Number 1584.
Compliance required as soon as practicable, but not later than next engine overhaul after January 1, 1953.
In order to eliminate possible hazard due to excessive pressure from the engine-driven fuel pump, install a high-pressure relief valve between the fuel pump outlet and the inlet side of the hand wobble pump.
(Bellanca Service Bulletin No. 23 covers this same subject.)
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/52-28-02.json · aircraft systems.