 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
MD80 flight crew notices both xponders become inoperative on arrival at the gate in okc. FAA jump seat rider indicates there is frequently transponder trouble at this airport.
| Attributes | |
| ACN | 384854 |
| Time | |
| Date | 199711 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : okc |
| State Reference | OK |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 7000 flight time type : 1700 |
| ASRS Report | 384854 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Airport |
| Air Traffic Incident | other |
| Situations | |
| Airport | other physical facility |
Narrative:
On arrival at gate both xponders went inoperative. Discovered from company that entire airport gives xponders trouble. Fault did not go away until we were airborne. Technically we shouldn't leave the gate with 2 inoperative xponders. Apparently the airport and FAA are aware of the anomaly but to date nothing has been done. Callback conversation with reporter revealed the following information: reporter states they had an FAA maintenance person on board at departure time. This makes the flight crew even more concerned with proper procedures. In discussion with the FAA representative he stated that the problem is known and usually fixes itself once airborne. Reporter also contacted pilot of commuter aircraft at next gate who indicated he did not have the problem. It appears to be a problem peculiar to the specific parking area. It has happened 2 or 3 times to this reporter at this airport. He feels there is an EMI problem on the airport that manifests itself in that area. Some other company aircraft also experience the problem but some do not.
Original NASA ASRS Text
Title: MD80 FLC NOTICES BOTH XPONDERS BECOME INOP ON ARR AT THE GATE IN OKC. FAA JUMP SEAT RIDER INDICATES THERE IS FREQUENTLY XPONDER TROUBLE AT THIS ARPT.
Narrative: ON ARR AT GATE BOTH XPONDERS WENT INOP. DISCOVERED FROM COMPANY THAT ENTIRE ARPT GIVES XPONDERS TROUBLE. FAULT DID NOT GO AWAY UNTIL WE WERE AIRBORNE. TECHNICALLY WE SHOULDN'T LEAVE THE GATE WITH 2 INOP XPONDERS. APPARENTLY THE ARPT AND FAA ARE AWARE OF THE ANOMALY BUT TO DATE NOTHING HAS BEEN DONE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES THEY HAD AN FAA MAINT PERSON ON BOARD AT DEP TIME. THIS MAKES THE FLC EVEN MORE CONCERNED WITH PROPER PROCS. IN DISCUSSION WITH THE FAA REPRESENTATIVE HE STATED THAT THE PROB IS KNOWN AND USUALLY FIXES ITSELF ONCE AIRBORNE. RPTR ALSO CONTACTED PLT OF COMMUTER ACFT AT NEXT GATE WHO INDICATED HE DID NOT HAVE THE PROB. IT APPEARS TO BE A PROB PECULIAR TO THE SPECIFIC PARKING AREA. IT HAS HAPPENED 2 OR 3 TIMES TO THIS RPTR AT THIS ARPT. HE FEELS THERE IS AN EMI PROB ON THE ARPT THAT MANIFESTS ITSELF IN THAT AREA. SOME OTHER COMPANY ACFT ALSO EXPERIENCE THE PROB BUT SOME DO NOT.
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.