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A dispatcher reports maintenance issued 2 deferred items for 2 EMB145 aircraft in error. Both involved operational problems.
| Attributes | |
| ACN | 653150 |
| Time | |
| Date | 200504 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Controlling Facilities | tower : ism.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Embraer Jet Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Embraer Jet Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel |
| ASRS Report | 653150 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation maintenance problem : non compliance with mel non adherence : company policies non adherence : far non adherence : published procedure |
| Independent Detector | other other : 2 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
ZZZ maintenance called maintenance operations controller to issue MEL and maintenance operations controller issued MEL to 2 aircraft (X and Y). Ship X was issued MEL 24-5 requesting APU to be operated during entire flight; and then ship Y was issued MEL 49-2 restricting APU bleed to be used. The captain called on flight XXX to advise the MEL and maintenance log sheet do not match nor make sense. Aircraft Y should have had the engine generator deferred and run APU while aircraft X should have had the APU bleed deferred. Now one sees the concern for the aircraft which has a bleed problem is requested use of APU while the aircraft that needs APU is being advised it is unavailable. Furthermore; additional fuel is required for the 24-5 MEL APU constant use and may not have been planned for or available. This was a great concern and safeguards need to be in place or followed to prevent a serious problem from occurring.
Original NASA ASRS Text
Title: A DISPATCHER RPTS MAINT ISSUED 2 DEFERRED ITEMS FOR 2 EMB145 ACFT IN ERROR. BOTH INVOLVED OPERATIONAL PROBS.
Narrative: ZZZ MAINT CALLED MAINT OPS CTLR TO ISSUE MEL AND MAINT OPS CTLR ISSUED MEL TO 2 ACFT (X AND Y). SHIP X WAS ISSUED MEL 24-5 REQUESTING APU TO BE OPERATED DURING ENTIRE FLT; AND THEN SHIP Y WAS ISSUED MEL 49-2 RESTRICTING APU BLEED TO BE USED. THE CAPT CALLED ON FLT XXX TO ADVISE THE MEL AND MAINT LOG SHEET DO NOT MATCH NOR MAKE SENSE. ACFT Y SHOULD HAVE HAD THE ENG GENERATOR DEFERRED AND RUN APU WHILE ACFT X SHOULD HAVE HAD THE APU BLEED DEFERRED. NOW ONE SEES THE CONCERN FOR THE ACFT WHICH HAS A BLEED PROB IS REQUESTED USE OF APU WHILE THE ACFT THAT NEEDS APU IS BEING ADVISED IT IS UNAVAILABLE. FURTHERMORE; ADDITIONAL FUEL IS REQUIRED FOR THE 24-5 MEL APU CONSTANT USE AND MAY NOT HAVE BEEN PLANNED FOR OR AVAILABLE. THIS WAS A GREAT CONCERN AND SAFEGUARDS NEED TO BE IN PLACE OR FOLLOWED TO PREVENT A SERIOUS PROB FROM OCCURRING.
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.