SDR TWAA0015901

Service difficulty report · Controller · Doug DC983

Difficulty date: October 10, 2000
Submitted: June 25, 2001
Operation: Air carrier
Aircraft: N963TW
Make and model: Doug DC983
Aircraft serial: 53613
Aircraft time: 4,443 hours, 2,277 cycles
System (JASC): 2730 · Elevator Control System
Part: Controller
Condition: Malfunctioned
Location: Elevator
Stage of operation: DE
How discovered: O
Nature of condition: F
Precautionary procedure: H

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

What was found

SEVERE PITCH OSCILLATIONS WERE REPORTED IN DESCENT AT 300 KNOTS, CAUSING THE CREW PROBLEMS CONTROLLING THE AIRCRAFT. LASTED FOR APPROXIMATELY 2 MINUTES. NO ABNORMAL INDICATIONS IN THE COCKPIT. LANDED NORMALLY. CHECK-C 5-24-00 JFK. AFTER EXTENSIVE CHECKS OF NUMEROUS AIRCRAFT SYSTEMS NO AIRCRAFT MALFUNCTION WAS FOUND AND NO EVIDENCE WAS FOUND TO LINK THE REPORT TO AN AIRCRAFT MALFUNCTION. THE AIRCRAFT WAS ALSO TEST FLOWN.

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