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Air carrier widebody transport departing lax with no passenger aborts takeoff when PF trims forward to relieve control pressure and takeoff warning horn sounds for trim condition. Trim was still in appropriate range.
| Attributes | |
| ACN | 136138 |
| Time | |
| Date | 199002 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : lax |
| State Reference | CA |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 4 Turbojet Eng |
| Flight Phase | climbout : takeoff other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi |
| Experience | flight time last 90 days : 200 flight time total : 7500 flight time type : 200 |
| ASRS Report | 136138 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 210 flight time total : 26000 flight time type : 2200 |
| ASRS Report | 135976 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : rejected takeoff |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
On taxiout from company hangar after all checklists complete, captain advised first officer aircraft felt tail heavy. Position and hold 24L lax, tower cleared for takeoff. Checklists complete, power applied. First officer held full forward yoke. Tail was still heavy. First officer trimmed once forward pressure. An intermittent horn sounded and abort procedures followed. Speed approximately 80-85 KTS. Exited runway and completed company procedures. Noted trim 2 3/4 units (still in green band). Retrimmed back to original setting (3 1/4) checked throttles, no horn. Completed all checklists taxied for takeoff. Abort and procedures relayed to company. Log book write-up sea. Aircraft had previous write-up and complaint. Light weight aircraft, crew only, no revenue passenger. Warning horn set close proximity to green band.
Original NASA ASRS Text
Title: ACR WDB DEPARTING LAX WITH NO PAX ABORTS TKOF WHEN PF TRIMS FORWARD TO RELIEVE CONTROL PRESSURE AND TKOF WARNING HORN SOUNDS FOR TRIM CONDITION. TRIM WAS STILL IN APPROPRIATE RANGE.
Narrative: ON TAXIOUT FROM COMPANY HANGAR AFTER ALL CHKLISTS COMPLETE, CAPT ADVISED F/O ACFT FELT TAIL HEAVY. POS AND HOLD 24L LAX, TWR CLRED FOR TKOF. CHKLISTS COMPLETE, PWR APPLIED. F/O HELD FULL FORWARD YOKE. TAIL WAS STILL HEAVY. F/O TRIMMED ONCE FORWARD PRESSURE. AN INTERMITTENT HORN SOUNDED AND ABORT PROCS FOLLOWED. SPD APPROX 80-85 KTS. EXITED RWY AND COMPLETED COMPANY PROCS. NOTED TRIM 2 3/4 UNITS (STILL IN GREEN BAND). RETRIMMED BACK TO ORIGINAL SETTING (3 1/4) CHKED THROTTLES, NO HORN. COMPLETED ALL CHKLISTS TAXIED FOR TKOF. ABORT AND PROCS RELAYED TO COMPANY. LOG BOOK WRITE-UP SEA. ACFT HAD PREVIOUS WRITE-UP AND COMPLAINT. LIGHT WT ACFT, CREW ONLY, NO REVENUE PAX. WARNING HORN SET CLOSE PROX TO GREEN BAND.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.