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Air carrier medium large transport microphone shorted out, failed both radio communication. Emergency declared, flight proceeded VFR and received ldng clearance by light gun.
| Attributes | |
| ACN | 101974 |
| Time | |
| Date | 198901 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : hnl |
| State Reference | HI |
| Altitude | msl bound lower : 8000 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zhn tracon : hnl tower : hnl |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach descent other landing other |
| Route In Use | arrival other enroute airway : hnl |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | other pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 200 flight time total : 2500 |
| ASRS Report | 101974 |
| 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 controllera other flight crewa |
| Resolutory Action | flight crew : declared emergency other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Captain's microphone key wire shorted out causing both VHF radios to fail. Squawked 7700 for 1 minute. Then 7600. Flew as filed in VFR conditions, received steady green light from hnl tower. Landed without incident.
Original NASA ASRS Text
Title: ACR MLG MICROPHONE SHORTED OUT, FAILED BOTH RADIO COM. EMERGENCY DECLARED, FLT PROCEEDED VFR AND RECEIVED LDNG CLRNC BY LIGHT GUN.
Narrative: CAPT'S MICROPHONE KEY WIRE SHORTED OUT CAUSING BOTH VHF RADIOS TO FAIL. SQUAWKED 7700 FOR 1 MINUTE. THEN 7600. FLEW AS FILED IN VFR CONDITIONS, RECEIVED STEADY GREEN LIGHT FROM HNL TWR. LANDED WITHOUT INCIDENT.
Data retrieved from NASA's ASRS site as of August 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.