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A mechanic performing maintenance on #2 engine notices a broken section of a runner block that had separated from under the 9th stage unison ring. Aircraft had just been released form a heavy 'C' check; ten days earlier.
| Attributes | |
| ACN | 839093 |
| Time | |
| Date | 200906 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Component | |
| Aircraft Component | Engine Air Pneumatic Ducting |
| Person 1 | |
| Function | Technician Inspector |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Maintenance |
Narrative:
#2 engine; 9th stage unison runner block; lower engine; found broken off at the 2:00 position. The B757-200 left a 'C' check; 10 days earlier from contract maintenance facility. Replaced (runner) block ref MM 75-31-98.
Original NASA ASRS Text
Title: A Mechanic performing maintenance on #2 engine notices a broken section of a runner block that had separated from under the 9th stage unison ring. Aircraft had just been released form a heavy 'C' check; ten days earlier.
Narrative: #2 engine; 9th stage unison runner block; lower engine; found broken off at the 2:00 position. The B757-200 left a 'C' check; 10 days earlier from contract maintenance facility. Replaced (runner) block ref MM 75-31-98.
Data retrieved from NASA's ASRS site as of April 2012 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.