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This BA41 pilot report was submitted regarding a company's questioning of flight crew procedures. Erratic engine indications, with power lever movement during takeoff, had led to this captain's action of aborting takeoff.
| Attributes | |
| ACN | 356863 |
| Time | |
| Date | 199612 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : stl |
| State Reference | MO |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Jetstream 41 |
| Navigation In Use | Other |
| Flight Phase | climbout : takeoff other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 120 flight time total : 3000 flight time type : 140 |
| ASRS Report | 356863 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : rejected takeoff |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Cleared for takeoff 'without delay.' as power levers moved, they suddenly released all friction, with a corresponding increase in power on one engine, and none on the other. Aborted takeoff. Did several run-ups with no indications of a problem. Told maintenance it could have been stuck on the start locks. All checklists and procedures were followed and completed. However, company believes my radio statement, which was only a guess, constituted an implication that procedures weren't followed. Callback conversation with reporter revealed the following information: the propellers should have come off the start locks during engine start, through centrifugal force, so, reporter is still uncertain as to the actual cause of the power fluctuations. Reporter states that other crew members since, have had problems with the RPM limiter not doing its job, and that this could be another instance. A reverse caption light had illuminated during taxi.
Original NASA ASRS Text
Title: THIS BA41 PLT RPT WAS SUBMITTED REGARDING A COMPANY'S QUESTIONING OF FLC PROCS. ERRATIC ENG INDICATIONS, WITH PWR LEVER MOVEMENT DURING TKOF, HAD LED TO THIS CAPT'S ACTION OF ABORTING TKOF.
Narrative: CLRED FOR TKOF 'WITHOUT DELAY.' AS PWR LEVERS MOVED, THEY SUDDENLY RELEASED ALL FRICTION, WITH A CORRESPONDING INCREASE IN PWR ON ONE ENG, AND NONE ON THE OTHER. ABORTED TKOF. DID SEVERAL RUN-UPS WITH NO INDICATIONS OF A PROB. TOLD MAINT IT COULD HAVE BEEN STUCK ON THE START LOCKS. ALL CHKLISTS AND PROCS WERE FOLLOWED AND COMPLETED. HOWEVER, COMPANY BELIEVES MY RADIO STATEMENT, WHICH WAS ONLY A GUESS, CONSTITUTED AN IMPLICATION THAT PROCS WEREN'T FOLLOWED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE PROPS SHOULD HAVE COME OFF THE START LOCKS DURING ENG START, THROUGH CENTRIFUGAL FORCE, SO, RPTR IS STILL UNCERTAIN AS TO THE ACTUAL CAUSE OF THE PWR FLUCTUATIONS. RPTR STATES THAT OTHER CREW MEMBERS SINCE, HAVE HAD PROBS WITH THE RPM LIMITER NOT DOING ITS JOB, AND THAT THIS COULD BE ANOTHER INSTANCE. A REVERSE CAPTION LIGHT HAD ILLUMINATED DURING TAXI.
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.