SDR AALA201907079011

Service difficulty report · Warning System · Boeing 737823

Difficulty date: July 6, 2019
Submitted: July 9, 2019
Operation: Air carrier
Aircraft: N958AN
Make and model: Boeing 737823
Aircraft serial: 30091
Aircraft time: 55,259 hours, 22,912 cycles
System (JASC): 2751 · Trailing Flap Position Indicating System
Part: Warning System
Condition: False Activation
Location: Cockpit
Stage of operation: AP
How discovered: O
Nature of condition: N
Precautionary procedure: K

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

What was found

AIRCRAFT NOT GROUNDED: PILOT REPORTS ON FINAL APPROACH AT 190 KTS WITH FLAP LEVER IN 10 SLOT, INDICATOR SHOWED 15 AND HORN ACTIVATED. ACMS PAGE SHOWED ALL FLAP LIMITS OFF. 1-230, 5-230, 10-180, 15-170, 25-170, 30-160 AND 40-150. HORN STOPPED AFTER GEAR EXTENDED. MAINTENANCE PERFORMED FIM TASK 32-61-00-810-815. NO FAULTS FOUND. INPUT MONITORING OF FLAP SWITCH. CHECKS GOOD WITH FLAP OPERATION.