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A B737-500 on a diagnostic test flight when in descent at FL330 both engines moved to idle 56% N1 the left engine flamed out.
| Attributes | |
| ACN | 712732 |
| Time | |
| Date | 200610 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdv.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-500 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 55 flight time total : 5500 flight time type : 1400 |
| ASRS Report | 712732 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : published procedure |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Environmental Factor Aircraft Chart Or Publication |
| Primary Problem | Aircraft |
Narrative:
During diagnostic test flight; during descent through FL330; when both engines move from idle to 56% N1; left (#1) engine flameout; with associated popping noise from engine. (Previous line write-up was similar conditions resulting in popping noise.) maintenance consulted; engine relight accomplished and 2 engine approach and landing accomplished with no further problems.
Original NASA ASRS Text
Title: A B737-500 ON A DIAGNOSTIC TEST FLT WHEN IN DSCNT AT FL330 BOTH ENGS MOVED TO IDLE 56% N1 THE L ENG FLAMED OUT.
Narrative: DURING DIAGNOSTIC TEST FLT; DURING DSCNT THROUGH FL330; WHEN BOTH ENGS MOVE FROM IDLE TO 56% N1; L (#1) ENG FLAMEOUT; WITH ASSOCIATED POPPING NOISE FROM ENG. (PREVIOUS LINE WRITE-UP WAS SIMILAR CONDITIONS RESULTING IN POPPING NOISE.) MAINT CONSULTED; ENG RELIGHT ACCOMPLISHED AND 2 ENG APCH AND LNDG ACCOMPLISHED WITH NO FURTHER PROBS.
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.