SDR SWAA2026092374661

Service difficulty report · Fan Cowl · Boeing 7377H4

Difficulty date: September 5, 2026
Submitted: September 24, 2026
Operation: Air carrier
Aircraft: N259WN
Make and model: Boeing 7377H4
Aircraft serial: 35554
Aircraft time: 65,221 hours, 39,507 cycles
System (JASC): 5410 · Nacelle/Pylon, Main Frame
Part: Fan Cowl
Condition: Damaged
Location: Zone 400
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

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

What was found

ELONGATED HOLE LOCATED ON OUTBOARD FAN COWL 0.500 INCH FROM FWD EDGE AND 3.375 INCH FROM LOWER EDGE AT ENGINE 1. EVALUATED HOLE LOCATED ON OTBD FAN COWL 0.500 INCH FROM FWD EDGE AND 3.375 INCH FROM LOWER EDGE AT ENGINE AND FOUND WITHIN LIMITS IAW CMM 71-13-30, TASK 7113-30-220-801, STEP 2.A(4).

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