SDR ASMF200512010

Service difficulty report · Warning Horn · Doug DC987

Difficulty date: December 9, 2005
Submitted: December 14, 2005
Operation: Air carrier
Aircraft: N803ML
Make and model: Doug DC987
Aircraft serial: 49726
Aircraft time: 44,652 hours, 26,182 cycles
Engine: Pwa JT8D*
System (JASC): 2741 · Stabilizer Position Indicating
Part: Warning Horn
Condition: Activated
Location: Stab Trim
Stage of operation: IN
How discovered: O
Nature of condition: J
Precautionary procedure: K

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

What was found

DURING GROUND TESTS, THE CAUTION LONG TRIM STABILIZER WAS OUT OF RANGE ACTIVATING THE TAKEOFF ALARM. AIRCRAFT WAS SENT TO THE HANGAR AND THE TRIM STABILIZER WAS TESTED IAW MM 27-40-12 AND DURING OVERNIGHT CHECK, THE TAKEOFF ALARM SYSTEM WAS VERIFIED IAW MM 27-00-00 PAGE 214 STEP B, TESTED CORRECT.

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