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Maintenance deferred a nondeferrable item, VOR needle off by 10 degrees. Flight crew assumed that maintenance knew what was correct, but later found out that it was illegal to defer the item.
| Attributes | |
| ACN | 341560 |
| Time | |
| Date | 199607 |
| Day | Fri |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : mem |
| State Reference | TN |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 90 flight time total : 8000 flight time type : 5000 |
| ASRS Report | 341560 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 58 flight time total : 5310 flight time type : 139 |
| ASRS Report | 341119 |
| Events | |
| Anomaly | non adherence : published procedure non adherence : far other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
On preflight, notified by maintenance of MEL item of #1 VOR needle off by 10 degrees. Referenced company MEL/cdl with mechanic and deferred this #1 VOR RMI needle. Supplemental information from acn 341552: days later, I was informed that we were not legal to fly that aircraft. In defense of the captain and crew the deferment was given to the captain 10-15 mins prior to blockout (a very busy time for everyone) and I suspect that the captain took for granted that if maintenance is deferring this it must be ok. Also I suspect that maintenance showed the captain the wrong page/item in the MEL and or the captain misread it.
Original NASA ASRS Text
Title: MAINT DEFERRED A NONDEFERRABLE ITEM, VOR NEEDLE OFF BY 10 DEGS. FLC ASSUMED THAT MAINT KNEW WHAT WAS CORRECT, BUT LATER FOUND OUT THAT IT WAS ILLEGAL TO DEFER THE ITEM.
Narrative: ON PREFLT, NOTIFIED BY MAINT OF MEL ITEM OF #1 VOR NEEDLE OFF BY 10 DEGS. REFED COMPANY MEL/CDL WITH MECH AND DEFERRED THIS #1 VOR RMI NEEDLE. SUPPLEMENTAL INFO FROM ACN 341552: DAYS LATER, I WAS INFORMED THAT WE WERE NOT LEGAL TO FLY THAT ACFT. IN DEFENSE OF THE CAPT AND CREW THE DEFERMENT WAS GIVEN TO THE CAPT 10-15 MINS PRIOR TO BLOCKOUT (A VERY BUSY TIME FOR EVERYONE) AND I SUSPECT THAT THE CAPT TOOK FOR GRANTED THAT IF MAINT IS DEFERRING THIS IT MUST BE OK. ALSO I SUSPECT THAT MAINT SHOWED THE CAPT THE WRONG PAGE/ITEM IN THE MEL AND OR THE CAPT MISREAD IT.
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.