SDR DALA2017051804037

Service difficulty report · Gasket · Boeing 757351

Difficulty date: May 17, 2017
Submitted: May 19, 2017
Operation: Air carrier
Aircraft: N591NW
Make and model: Boeing 757351
Aircraft serial: 32991
Aircraft time: 49,770 hours, 16,698 cycles
System (JASC): 2761 · Drag Control Actuator
Part: Gasket
Condition: Leaking
Location: Nr 6 Pca
Stage of operation: AP
How discovered: O
Nature of condition: K, F, J
Precautionary procedure: L, A

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

What was found

ENROUTE, AIRCRAFT LOST THE RT HYD QTY FLUID. DURING APPROACH WITH FLAPS AT 30, THE AIRCRAFT EXPERIENCED A ROLL TO THE LEFT. CREW DID A GO AROUND, EXTEND THE FLAPS AND EXPERIENCED THE SAME PROBLEM. PLACED THE FLAPS AT 25 WITH NO PROBLEM. MAINTENANCE TROUBLESHOT IAW AMM. FOUND PCA SERVO GASKET LEAKING ON NR 7 SPOILER PCA. REPLACED THE GASKET. REMOVED AND REPLACED THE NR 6 SPOILER PCA. LEAK, OPS AND RIGGED CHECKED OK.