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B767 first officer removes himself form flight when TCAS fails during preflight and maintenance elects to defer the repair via MEL.
| Attributes | |
| ACN | 810372 |
| Time | |
| Date | 200810 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ord.airport |
| State Reference | IL |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 200 flight time total : 11500 flight time type : 2500 |
| ASRS Report | 810372 |
| Events | |
| Anomaly | non adherence : company policies |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted other |
| Consequence | other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft |
| Primary Problem | Ambiguous |
Narrative:
10 mins before pushback; TCAS failed. Mechanic came on board; said upper antenna was bad. Deferred TCAS system. I felt it was unsafe to fly the aircraft in this condition. Legal; yet safe? Ord has had many separation events between aircraft. TCAS is a very important tool we use -- into certain airports and under conditions; it should not be deferrable. I would prefer it never to be deferrable. They replaced me within 30 mins. Captain and new first officer flew to ord; I deadheaded on a different flight.
Original NASA ASRS Text
Title: B767 FIRST OFFICER REMOVES HIMSELF FORM FLIGHT WHEN TCAS FAILS DURING PREFLIGHT AND MAINTENANCE ELECTS TO DEFER THE REPAIR VIA MEL.
Narrative: 10 MINS BEFORE PUSHBACK; TCAS FAILED. MECH CAME ON BOARD; SAID UPPER ANTENNA WAS BAD. DEFERRED TCAS SYSTEM. I FELT IT WAS UNSAFE TO FLY THE ACFT IN THIS CONDITION. LEGAL; YET SAFE? ORD HAS HAD MANY SEPARATION EVENTS BTWN ACFT. TCAS IS A VERY IMPORTANT TOOL WE USE -- INTO CERTAIN ARPTS AND UNDER CONDITIONS; IT SHOULD NOT BE DEFERRABLE. I WOULD PREFER IT NEVER TO BE DEFERRABLE. THEY REPLACED ME WITHIN 30 MINS. CAPT AND NEW FO FLEW TO ORD; I DEADHEADED ON A DIFFERENT FLT.
Data retrieved from NASA's ASRS site as of May 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.