Category: navion, romec, fuel
Applicability: All airplanes with Romec engine-driven fuel pumps. Ryan made this change, starting with airplane serial No. 1823.
Supersedes: n/a
Compliance: Not later than May 1, 1949
Procedure: On some
of the Rornec fuel pumps, a 1/16-inch hole has been drilled through the
1/8-inch pipe plug which closes the vent opening at the top of the pump.
This is a fire hazard since, in the event of pump seal failure, fuel could
squirt from this hole into the generator which is directly above the fuel
pump, and into the engine compartment. It is therefore required that all
drilled vent plugs be
replaced by undrilled plugs. Undrilled vent plugs are
being painted with zinc chromate primer at the Ryan factory.
Notes: none
AD-49-12-02