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A B767 captain reports new type of hand mikes being installed on B767 and B757 fleets have no bracket that secures the microphone.
| Attributes | |
| ACN | 547970 |
| Time | |
| Date | 200205 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : sea.airport |
| State Reference | WA |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Operating Under FAR Part | Part 121 |
| Flight Phase | landing : roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 17000 flight time type : 2229 |
| ASRS Report | 547970 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other Other |
| Factors | |
| Maintenance | contributing factor : engineering procedure contributing factor : schedule pressure performance deficiency : installation |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Flight Crew Human Performance Company Aircraft |
| Primary Problem | Company |
Narrative:
The B767/757 fleet has 2 types of hand mikes. Only the older type has a usable bracket that fits the microphone. The new calsel microphone does not have a secure location. On landing in sea, the first officer flight case moved forward and keyed the microphone causing a stuck microphone on tower frequency. I've seen this happen twice. This is a major problem on a busy frequency. These mikes need to be secured properly.
Original NASA ASRS Text
Title: A B767 CAPT RPTS NEW TYPE OF HAND MIKES BEING INSTALLED ON B767 AND B757 FLEETS HAVE NO BRACKET THAT SECURES THE MIKE.
Narrative: THE B767/757 FLEET HAS 2 TYPES OF HAND MIKES. ONLY THE OLDER TYPE HAS A USABLE BRACKET THAT FITS THE MIKE. THE NEW CALSEL MIKE DOES NOT HAVE A SECURE LOCATION. ON LNDG IN SEA, THE FO FLT CASE MOVED FORWARD AND KEYED THE MIKE CAUSING A STUCK MIKE ON TWR FREQ. I'VE SEEN THIS HAPPEN TWICE. THIS IS A MAJOR PROB ON A BUSY FREQ. THESE MIKES NEED TO BE SECURED 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.