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A saab 340A was dispatched and operated in 2 flight segments in non compliance with 2 conflicting deferred items.
| Attributes | |
| ACN | 472088 |
| Time | |
| Date | 200005 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340A |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : preflight ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : flight engineer pilot : cfi pilot : atp pilot : instrument |
| Experience | flight time last 90 days : 120 flight time total : 4200 flight time type : 600 |
| ASRS Report | 472088 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : multi engine pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 130 flight time total : 2500 flight time type : 400 |
| ASRS Report | 471817 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : non compliance with mel non adherence : far non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure contributing factor : manuals performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication Company Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
| Situations | |
| Publication | MINIMUM EQUIPMENT LIST |
Narrative:
In looking in looking at aircraft release, MEL's, etc, I noted the MEL procedure for a different avionics fan. I then noted the procedure for a different bleed air leak defect. This procedure had us leave our bleed off. The avionics vent fan procedure stated the bleed system must be operating normally. It was later determined that the aircraft should not be flown in this condition. Even though the bleed system was working normally, we had to select it off.
Original NASA ASRS Text
Title: A SAAB 340A WAS DISPATCHED AND OPERATED IN 2 FLT SEGMENTS IN NON COMPLIANCE WITH 2 CONFLICTING DEFERRED ITEMS.
Narrative: IN LOOKING IN LOOKING AT ACFT RELEASE, MEL'S, ETC, I NOTED THE MEL PROC FOR A DIFFERENT AVIONICS FAN. I THEN NOTED THE PROC FOR A DIFFERENT BLEED AIR LEAK DEFECT. THIS PROC HAD US LEAVE OUR BLEED OFF. THE AVIONICS VENT FAN PROC STATED THE BLEED SYS MUST BE OPERATING NORMALLY. IT WAS LATER DETERMINED THAT THE ACFT SHOULD NOT BE FLOWN IN THIS CONDITION. EVEN THOUGH THE BLEED SYS WAS WORKING NORMALLY, WE HAD TO SELECT IT OFF.
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.