Service difficulty report · O-Ring · Boeing 73779P

Difficulty date
May 11, 2026
Submitted
May 12, 2026
Operation
Air carrier
Aircraft
N7861J
Make and model
Boeing 73779P
Aircraft serial
33008
Aircraft time
57,389 hours, 38,564 cycles
Part
O-Ring
Condition
Torn
Location
Zone 100
Stage of operation
CR
How discovered
O
Nature of condition
K, J
Precautionary procedure
O

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

What was found

LOSS OF SYS B HYD PRESSURE AND FLUID. FOUND O-RING ON TRAILING EDGE FLAP FLOW LIMITER TORN. O-RINGS REPLACED & REPLACED TRAILING EDGE FLAP FLOW LIMITER REF AMM 27-51-67 & SVC'D B SYS REF AMM 12-12-00. NO LEAKS NOTED AT THIS TIME.

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