SDR UPS04542614

Service difficulty report · Bypass Valve · Boeing 75724APF

Difficulty date: June 26, 2004
Submitted: June 28, 2004
Operation: Air carrier
Aircraft: N460UP
Make and model: Boeing 75724APF
Aircraft serial: 25481
System (JASC): 2780 · Leading Edge Slat Control System
Part: Bypass Valve
Condition: Failed
Location: Slats
Stage of operation: LD
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

AFTER SELECTING FLAPS 1, FLAP POSITION INDICATOR STOPPED BETWEEN 0 AND 1, LEADING EDGE SLAT DISAGREE MSG APPEARED. COMPLETED APPROPRIATE CHECKLIST AND LANDED FLAPS 20 W/O FURTHER PROBLEM. REMOVED AND REPLACED L/E SLAT BY-PASS VALVE, OPS CHECKS GOOD PER MM 27-81-09-4. LEAK CHECK GOOD FSEU-3 MSG, SLAT PDU XTR, FAULT. REMOVED AND REPLACED PDU XTR (SLATS) CHECKS GOOD PER MM 27-81-08-2.

More about the Boeing 757-24APF