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A B757-200 aborted takeoff due to an engine overheat warning. Found a loose joint in the pneumatic ducting downstream of a recently replaced high pressure bleed shutoff valve.
| Attributes | |
| ACN | 692295 |
| Time | |
| Date | 200603 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 18 |
| ASRS Report | 692295 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : eng ovht warning other flight crewa |
| Resolutory Action | flight crew : rejected takeoff |
| Consequence | other other |
| Factors | |
| Maintenance | performance deficiency : non compliance with legal requirements performance deficiency : testing performance deficiency : logbook entry performance deficiency : installation performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Environmental Factor Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
Replaced hpv valve performed engine run; leak checks engine run and functional checks were normal. Later learned that aircraft had an aborted takeoff. Aircraft executed a low speed aborted takeoff 2 days after hpv valve was replaced. Maintenance discovered a loose joint downstream of hpv which was corrected by replacement of seals and reinstallation.
Original NASA ASRS Text
Title: A B757-200 ABORTED TKOF DUE TO AN ENG OVERHEAT WARNING. FOUND A LOOSE JOINT IN THE PNEUMATIC DUCTING DOWNSTREAM OF A RECENTLY REPLACED HIGH PRESSURE BLEED SHUTOFF VALVE.
Narrative: REPLACED HPV VALVE PERFORMED ENG RUN; LEAK CHKS ENG RUN AND FUNCTIONAL CHKS WERE NORMAL. LATER LEARNED THAT ACFT HAD AN ABORTED TKOF. ACFT EXECUTED A LOW SPD ABORTED TKOF 2 DAYS AFTER HPV VALVE WAS REPLACED. MAINT DISCOVERED A LOOSE JOINT DOWNSTREAM OF HPV WHICH WAS CORRECTED BY REPLACEMENT OF SEALS AND REINSTALLATION.
Data retrieved from NASA's ASRS site as of January 2009 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.