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55-09-01

final rule

BOEING Model 377 Aircraft

Unsafe Condition: Loss of manual r.p.m. control can occur as a result of tripping of the fast-acting magnetic circuit breaker before the slow-acting fuse is blown on a faulted branch.

Category: aircraft Compliance: as soon as practicable but not later than June 30, 1955

Why matched: BOEING Model 377 Aircraft

Technical illustration of an aircraft electrical generator and wiring assembly
Problem area Electrical system
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52-12-01

final rule

BOEING Model 377 Aircraft

Unsafe Condition: Overheating of the freon compressor motors could result in fire.

Category: aircraft Compliance: Before any installation of overhauled or new compressor motor after October 1, 1952 (for item A) ...

Why matched: BOEING Model 377 Aircraft

Technical illustration of an aircraft turbine engine assembly
Problem area Engine
View Details Official Source ↗