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B767 captain reported two block turn backs caused by deferred maintenance; resulting in a flight delay.
| Attributes | |
| ACN | 1685469 |
| Time | |
| Date | 201909 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | B767-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Fuel Control Computer |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural MEL Deviation - Procedural Published Material / Policy |
Narrative:
Dispatched with deferred eec's (electronic engine control). After start on both block turn backs (btbs); EICAS message of left engine eec probe; eec probe discreet light and mach probe discreet light. Also had related status message on both btbs.also; not related to btbs; but interesting to note: although manuals have full takeoff power requirement; tlr (thrust lever reading); with eecs deferral noted; show atm power settings. Recommend live calculation for max power takeoff; insuring deferral taken into account. Company informed this date through the incident report.verify maximum power takeoff is indeed a necessary requirement. If so; either live calculate every takeoff or reprogram tlr for this MEL item. Discontinue tlr; using only live calculation until this is resolved.
Original NASA ASRS Text
Title: B767 Captain reported two block turn backs caused by deferred maintenance; resulting in a flight delay.
Narrative: Dispatched with deferred EEC's (Electronic Engine Control). After start on both Block Turn Backs (BTBs); EICAS Message of L ENG EEC PROBE; EEC PROBE Discreet light and MACH PROBE Discreet light. Also had related status message on both BTBs.Also; not related to BTBs; but interesting to note: Although manuals have full takeoff power requirement; TLR (Thrust Lever Reading); with EECs deferral noted; show ATM power settings. Recommend live calculation for max power takeoff; insuring deferral taken into account. Company informed this date through the incident report.Verify maximum power takeoff is indeed a necessary requirement. If so; either live calculate every takeoff or reprogram TLR for this MEL item. Discontinue TLR; using only live calculation until this is resolved.
Data retrieved from NASA's ASRS site 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.