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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Widebody transport lost all air ground communications during descent causing flight crew to squawk lost communication and proceed VFR to destination.
| Attributes | |
| ACN | 314390 |
| Time | |
| Date | 199508 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : oak airport : zoa |
| State Reference | CA |
| Altitude | agl bound lower : 0 agl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zoa tracon : zoa tower : zoa |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other other |
| Route In Use | enroute : pacific enroute : other oceanic |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | other other : other pilot : instrument pilot : private pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 100 flight time total : 4500 flight time type : 100 |
| ASRS Report | 314390 |
| 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 | other flight crewa |
| Resolutory Action | aircraft : equipment problem dissipated flight crew : overcame equipment problem other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
On flight from hnl to oak, we were cleared pilot discretion descent from FL310 to 8000 ft MSL. When we started down, we called out of FL310. No response from ATC. Both pilots tried all mikes available, but no answer. We tried VHF 1 and VHF 2 and could not raise anybody on any radio. We were SELCAL'ed on HF and even on that radio nobody answered our attempted radio calls, we finally decided we probably had a stuck microphone and were radio out, so we squawked 7600 and proceeded VFR per far 91.185 (B) and landed at oakland. On landing, suddenly all radios started working properly.
Original NASA ASRS Text
Title: WDB LOST ALL AIR GND COMS DURING DSCNT CAUSING FLC TO SQUAWK LOST COM AND PROCEED VFR TO DEST.
Narrative: ON FLT FROM HNL TO OAK, WE WERE CLRED PLT DISCRETION DSCNT FROM FL310 TO 8000 FT MSL. WHEN WE STARTED DOWN, WE CALLED OUT OF FL310. NO RESPONSE FROM ATC. BOTH PLTS TRIED ALL MIKES AVAILABLE, BUT NO ANSWER. WE TRIED VHF 1 AND VHF 2 AND COULD NOT RAISE ANYBODY ON ANY RADIO. WE WERE SELCAL'ED ON HF AND EVEN ON THAT RADIO NOBODY ANSWERED OUR ATTEMPTED RADIO CALLS, WE FINALLY DECIDED WE PROBABLY HAD A STUCK MIKE AND WERE RADIO OUT, SO WE SQUAWKED 7600 AND PROCEEDED VFR PER FAR 91.185 (B) AND LANDED AT OAKLAND. ON LNDG, SUDDENLY ALL RADIOS STARTED WORKING PROPERLY.
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.