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B737-400 first officer found foreign object damage to left engine. Damage not found on overnight layover check.
| Attributes | |
| ACN | 344864 |
| Time | |
| Date | 199608 |
| Day | Mon |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz |
| State Reference | US |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : ord |
| Operator | common carrier : air carrier |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 344864 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
At approximately XA30 hours, aug/xx/96, I was performing an overnight check on aircraft. As I started to inspect the inlet of #1 engine nose cowl, inlet probes, nose spinner, and started to inspect the fan blades at the 12 O'clock position when another mechanic drove up in the platform lift truck and advised me 'if you want to use the lift truck, use it now, the people on the 'a' check want to use it.' I stopped my inspection of the #1 engine to use the lift truck to check APU oil and change an inoperative trailing edge wingtip light. I then dropped the lift truck off at the 'a' check, and was informed tooling for my nosewheel change was available, I returned to #1 engine, hurried my inspection and overlooked foreign object damage to one fan blade at about the 3 O'clock position on #1 engine. Lighting also played a factor. There is a light for lighting the ramp area at gate, but with the jetway pulled up to the aircraft a shadow is cast across the left inboard wing and the entire #1 engine inlet. The inspection was done with a 'D' cell flashlight. The first officer found the damaged fan blade on his preflight walkaround in daylight.
Original NASA ASRS Text
Title: B737-400 FO FOUND FOREIGN OBJECT DAMAGE TO L ENG. DAMAGE NOT FOUND ON OVERNIGHT LAYOVER CHK.
Narrative: AT APPROX XA30 HRS, AUG/XX/96, I WAS PERFORMING AN OVERNIGHT CHK ON ACFT. AS I STARTED TO INSPECT THE INLET OF #1 ENG NOSE COWL, INLET PROBES, NOSE SPINNER, AND STARTED TO INSPECT THE FAN BLADES AT THE 12 O'CLOCK POS WHEN ANOTHER MECH DROVE UP IN THE PLATFORM LIFT TRUCK AND ADVISED ME 'IF YOU WANT TO USE THE LIFT TRUCK, USE IT NOW, THE PEOPLE ON THE 'A' CHK WANT TO USE IT.' I STOPPED MY INSPECTION OF THE #1 ENG TO USE THE LIFT TRUCK TO CHK APU OIL AND CHANGE AN INOP TRAILING EDGE WINGTIP LIGHT. I THEN DROPPED THE LIFT TRUCK OFF AT THE 'A' CHK, AND WAS INFORMED TOOLING FOR MY NOSEWHEEL CHANGE WAS AVAILABLE, I RETURNED TO #1 ENG, HURRIED MY INSPECTION AND OVERLOOKED FOREIGN OBJECT DAMAGE TO ONE FAN BLADE AT ABOUT THE 3 O'CLOCK POS ON #1 ENG. LIGHTING ALSO PLAYED A FACTOR. THERE IS A LIGHT FOR LIGHTING THE RAMP AREA AT GATE, BUT WITH THE JETWAY PULLED UP TO THE ACFT A SHADOW IS CAST ACROSS THE L INBOARD WING AND THE ENTIRE #1 ENG INLET. THE INSPECTION WAS DONE WITH A 'D' CELL FLASHLIGHT. THE FO FOUND THE DAMAGED FAN BLADE ON HIS PREFLT WALKAROUND IN DAYLIGHT.
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.