Service difficulty report · O-Ring · Hughes 369D

Difficulty date
June 13, 1996
Submitted
March 26, 2000
Operation
Air carrier
Make and model
Hughes 369D
Engine
Allsn 250C20B
Part
O-Ring
Part number
MS29561437
Condition
Leaking
Location
M/R Transmission
Stage of operation
IN
Nature of condition
K
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) UPPER MAIN ROTOR TRANSMISSION O-RING LEAKING. AS TRANSMISSION WARMED TO OPERATING TEMPERATURE THE NEW PAINT MELTED AND UNSEATED O-RING.