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A B737 captain reported that one of the hand mikes was stuck open without his knowledge, effecting ZOA.
| Attributes | |
| ACN | 480250 |
| Time | |
| Date | 200007 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : smf.airport |
| State Reference | CA |
| Altitude | msl single value : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zoa.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Route In Use | enroute airway : ns.airway |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 10000 flight time type : 3000 |
| ASRS Report | 480250 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : reviewed incident with flight crew other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Hand microphone button was depressed and held open without the flight crew's knowledge (approximately 2-5 mins). Effected ZOA frequencys 132.95 and 134.37.
Original NASA ASRS Text
Title: A B737 CAPT RPTED THAT ONE OF THE HAND MIKES WAS STUCK OPEN WITHOUT HIS KNOWLEDGE, EFFECTING ZOA.
Narrative: HAND MIKE BUTTON WAS DEPRESSED AND HELD OPEN WITHOUT THE FLC'S KNOWLEDGE (APPROX 2-5 MINS). EFFECTED ZOA FREQS 132.95 AND 134.37.
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.