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Flight crew of an atx twin caused communication bleed through to approach control by using a slightly off common frequency in place of intercom which had malfunctioned.
| Attributes | |
| ACN | 316352 |
| Time | |
| Date | 199509 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : ict |
| State Reference | KS |
| Altitude | msl bound lower : 5000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : ict |
| Operator | common carrier : air taxi |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 135 |
| Flight Phase | cruise other |
| Route In Use | enroute other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : captain oversight : pic |
| Qualification | other other : other pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 130 flight time total : 6900 flight time type : 5000 |
| ASRS Report | 316352 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
Airplane was under 2 crew operation. As it was not fitted with an intercom, standard procedure for inter-crew communication is to tune 1 radio (king kx-170B) to a blank frequency (eg XXX.75) and use this as an intercom. This was done for the flight with no apparent problems. On landing I was advised by another company pilot that our conversations had bled over onto wichita approach frequency 126.70 causing them some inconvenience (blocking some xmissions to/from other aircraft). This is the first problem I have encountered using this method, and I shall discontinue its use until I am assured there will be no bleed over effects.
Original NASA ASRS Text
Title: FLC OF AN ATX TWIN CAUSED COM BLEED THROUGH TO APCH CTL BY USING A SLIGHTLY OFF COMMON FREQ IN PLACE OF INTERCOM WHICH HAD MALFUNCTIONED.
Narrative: AIRPLANE WAS UNDER 2 CREW OP. AS IT WAS NOT FITTED WITH AN INTERCOM, STANDARD PROC FOR INTER-CREW COM IS TO TUNE 1 RADIO (KING KX-170B) TO A BLANK FREQ (EG XXX.75) AND USE THIS AS AN INTERCOM. THIS WAS DONE FOR THE FLT WITH NO APPARENT PROBS. ON LNDG I WAS ADVISED BY ANOTHER COMPANY PLT THAT OUR CONVERSATIONS HAD BLED OVER ONTO WICHITA APCH FREQ 126.70 CAUSING THEM SOME INCONVENIENCE (BLOCKING SOME XMISSIONS TO/FROM OTHER ACFT). THIS IS THE FIRST PROB I HAVE ENCOUNTERED USING THIS METHOD, AND I SHALL DISCONTINUE ITS USE UNTIL I AM ASSURED THERE WILL BE NO BLEED OVER EFFECTS.
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.