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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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B737-400 flight crew fails to contact vancouver center after leaving ZSE sector. Czvr never was contacted. Crew cites failure of ZSE controller to perform the handoff as a major cause of event. Crew finally contacts zan center abeam yak, ak. PIC admits to conversing with first officer as another factor. No company incoming possible, #2 radio mistuned.
| Attributes | |
| ACN | 376690 |
| Time | |
| Date | 199708 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : yak |
| State Reference | AK |
| Altitude | msl bound lower : 31000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zan artcc : zse artcc : czvr tower : sbn |
| Operator | common carrier : air carrier |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 240 flight time total : 13500 |
| ASRS Report | 376690 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 220 flight time total : 5000 flight time type : 1500 |
| ASRS Report | 376657 |
| Events | |
| Anomaly | non adherence : far other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : became reoriented other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
En route between sea and anc received clearance from ZSE to anc via direct laire during climb out. Subsequently, did not receive handoff from ZSE to vancouver center. Later in the flight, realized radios were quiet (late night flight). Tried to contact vancouver center to no avail. Having transited vancouver center, made contact with zan for flight following. Contributing factor was conversations with other pilot at cruise. Company en route radio was also tuned 1 digit off (8 versus 9). At night, during a quiet radio environment, will make a habit of putting some radio changeover points on the fix page of the FMS and having volume and lights for radios turned up higher. Supplemental information from acn 376757: things to consider to prevent future occurrence. 1) keep radio volume up loud enough to prevent any distrs. 2) know that radio frequencys are quieter at night so I might have to do a 'radio check' with ATC. 3) be more aware of location on route that certain radio frequencys are used. 4) don't assume that the other pilot has talked with ATC on the frequency being used. Ask him/her who we are talking to at the present time.
Original NASA ASRS Text
Title: B737-400 FLC FAILS TO CONTACT VANCOUVER CTR AFTER LEAVING ZSE SECTOR. CZVR NEVER WAS CONTACTED. CREW CITES FAILURE OF ZSE CTLR TO PERFORM THE HDOF AS A MAJOR CAUSE OF EVENT. CREW FINALLY CONTACTS ZAN CTR ABEAM YAK, AK. PIC ADMITS TO CONVERSING WITH FO AS ANOTHER FACTOR. NO COMPANY INCOMING POSSIBLE, #2 RADIO MISTUNED.
Narrative: ENRTE BTWN SEA AND ANC RECEIVED CLRNC FROM ZSE TO ANC VIA DIRECT LAIRE DURING CLBOUT. SUBSEQUENTLY, DID NOT RECEIVE HDOF FROM ZSE TO VANCOUVER CTR. LATER IN THE FLT, REALIZED RADIOS WERE QUIET (LATE NIGHT FLT). TRIED TO CONTACT VANCOUVER CTR TO NO AVAIL. HAVING TRANSITED VANCOUVER CTR, MADE CONTACT WITH ZAN FOR FLT FOLLOWING. CONTRIBUTING FACTOR WAS CONVERSATIONS WITH OTHER PLT AT CRUISE. COMPANY ENRTE RADIO WAS ALSO TUNED 1 DIGIT OFF (8 VERSUS 9). AT NIGHT, DURING A QUIET RADIO ENVIRONMENT, WILL MAKE A HABIT OF PUTTING SOME RADIO CHANGEOVER POINTS ON THE FIX PAGE OF THE FMS AND HAVING VOLUME AND LIGHTS FOR RADIOS TURNED UP HIGHER. SUPPLEMENTAL INFO FROM ACN 376757: THINGS TO CONSIDER TO PREVENT FUTURE OCCURRENCE. 1) KEEP RADIO VOLUME UP LOUD ENOUGH TO PREVENT ANY DISTRS. 2) KNOW THAT RADIO FREQS ARE QUIETER AT NIGHT SO I MIGHT HAVE TO DO A 'RADIO CHK' WITH ATC. 3) BE MORE AWARE OF LOCATION ON RTE THAT CERTAIN RADIO FREQS ARE USED. 4) DON'T ASSUME THAT THE OTHER PLT HAS TALKED WITH ATC ON THE FREQ BEING USED. ASK HIM/HER WHO WE ARE TALKING TO AT THE PRESENT TIME.
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.