SDR ASMF20180902717

Service difficulty report · Seal · Boeing 737800*

Difficulty date: September 7, 2018
Submitted: September 27, 2018
Operation: Air carrier
Aircraft: N342AM
Make and model: Boeing 737800*
Aircraft serial: 34262
Aircraft time: 41,887 hours, 18,675 cycles
Engine: Cfmint CFM567B27
System (JASC): 7261 · Turbine Engine Oil System
Part: Seal
Condition: Leaking
Location: Oil Drain
Stage of operation: IN
How discovered: O
Nature of condition: K
Precautionary procedure: O

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

What was found

DURING OVERNIGHT CHECK, IT WAS DETECTED AN OIL LEAK IN THE LH ENGINE. MAINTENANCE PERSONNEL PERFORMED ENGINE 3A IDLE-POWER LEAKING TEST, DETECTING AN OIL LEAK ON N2 PAD DRAIN SEAL OF 60 DROPS PER MINUTE, BEING OUT OF LIMITS IAW AMM 71-71-00; SO THE MAGNETIC SEAL P/N 340-155-305-0 WAS REPLACED IAW AMM 72-63-00, TESTED CORRECT.

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