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A B747-100 returned to the field due to unable to make takeoff thrust. Engine was throttle limited. Throttle rigged per maintenance manual. Required inspection not accomplished.
| Attributes | |
| ACN | 653738 |
| Time | |
| Date | 200504 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl bound lower : 0 agl bound upper : 8000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : zzz.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B747-100 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff climbout : initial ground : parked ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 23 |
| ASRS Report | 653738 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 653630 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : epr indication #4 engine other flight crewa |
| Resolutory Action | flight crew : diverted to another airport |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : manuals contributing factor : work cards performance deficiency : non compliance with legal requirements performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Chart Or Publication Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
Aircraft could not produce takeoff power due to a limited thrust lever travel. I rigged the thrust lever per the maintenance manual. The aircraft departed with no other incidents. After consulting with other amt; it was determined that this rig was an rii item; and it was not done and documented at that time. My suggestion is to have all rii items flagged as such.
Original NASA ASRS Text
Title: A B747-100 RETURNED TO THE FIELD DUE TO UNABLE TO MAKE TKOF THRUST. ENG WAS THROTTLE LIMITED. THROTTLE RIGGED PER MAINT MANUAL. REQUIRED INSPECTION NOT ACCOMPLISHED.
Narrative: ACFT COULD NOT PRODUCE TKOF PWR DUE TO A LIMITED THRUST LEVER TRAVEL. I RIGGED THE THRUST LEVER PER THE MAINT MANUAL. THE ACFT DEPARTED WITH NO OTHER INCIDENTS. AFTER CONSULTING WITH OTHER AMT; IT WAS DETERMINED THAT THIS RIG WAS AN RII ITEM; AND IT WAS NOT DONE AND DOCUMENTED AT THAT TIME. MY SUGGESTION IS TO HAVE ALL RII ITEMS FLAGGED AS SUCH.
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.