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A B737-300 rejected takeoff at 50 KTS when #2 engine N1 compressor indicated less than takeoff target.
| Attributes | |
| ACN | 361459 |
| Time | |
| Date | 199702 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : iah |
| State Reference | TX |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : takeoff other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain |
| Qualification | pilot : instrument pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 20 flight time total : 10600 flight time type : 300 |
| ASRS Report | 361459 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer oversight : pic |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | other flight crewa other other : unspecified cockpit |
| Resolutory Action | aircraft : equipment problem dissipated flight crew : rejected takeoff none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Rejected the takeoff at approximately 50 KTS due to the #2 engine N1 not spooling. #2 egt, N2 and fuel flow all spooled normally. Conferred with company maintenance and they said try it again, meaning another takeoff, since cfm 56-3-B1 engine N1 will not spool on the first spool of the day. We used the #2 engine to taxi for the subsequent takeoff and the #2 N1 as well as the other engine parameters spooled normally.
Original NASA ASRS Text
Title: A B737-300 REJECTED TKOF AT 50 KTS WHEN #2 ENG N1 COMPRESSOR INDICATED LESS THAN TKOF TARGET.
Narrative: REJECTED THE TKOF AT APPROX 50 KTS DUE TO THE #2 ENG N1 NOT SPOOLING. #2 EGT, N2 AND FUEL FLOW ALL SPOOLED NORMALLY. CONFERRED WITH COMPANY MAINT AND THEY SAID TRY IT AGAIN, MEANING ANOTHER TKOF, SINCE CFM 56-3-B1 ENG N1 WILL NOT SPOOL ON THE FIRST SPOOL OF THE DAY. WE USED THE #2 ENG TO TAXI FOR THE SUBSEQUENT TKOF AND THE #2 N1 AS WELL AS THE OTHER ENG PARAMETERS SPOOLED NORMALLY.
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.