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C650 captain forgets to return to ZFW frequency monitoring after conducting an oxygen mask microphone system test. Time lapse approximately 4 mins.
| Attributes | |
| ACN | 602810 |
| Time | |
| Date | 200312 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : adm.vortac |
| State Reference | OK |
| Altitude | msl single value : 37000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw.artcc tower : zzzz.tower |
| Operator | general aviation : corporate |
| Make Model Name | Citation III, VI, VII |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other other vortac |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 90 flight time total : 8000 flight time type : 1500 |
| ASRS Report | 602810 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Events | |
| Anomaly | non adherence : published procedure non adherence : far non adherence other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
I decided to check the oxygen mask microphone system. I donned the mask, flipped the microphone switch to oxygen mask and called ATC for a radio check. Well, I forgot to change the audio selector from headset (we were wearing headsets before the check) to speaker (required to hear ATC). ATC was responding, but we couldn't hear them (total time: 4 mins approximately). I realized the error and went back to headsets. They said they were trying to call us 5 different times. No traffic conflicts were involved. Because of the lack of regular oxygen mask use, I missed performing the exact audio selection required for that mode of operation.
Original NASA ASRS Text
Title: C650 CAPT FORGETS TO RETURN TO ZFW FREQ MONITORING AFTER CONDUCTING AN OXYGEN MASK MIKE SYS TEST. TIME LAPSE APPROX 4 MINS.
Narrative: I DECIDED TO CHK THE OXYGEN MASK MIKE SYS. I DONNED THE MASK, FLIPPED THE MIKE SWITCH TO OXYGEN MASK AND CALLED ATC FOR A RADIO CHK. WELL, I FORGOT TO CHANGE THE AUDIO SELECTOR FROM HEADSET (WE WERE WEARING HEADSETS BEFORE THE CHK) TO SPEAKER (REQUIRED TO HEAR ATC). ATC WAS RESPONDING, BUT WE COULDN'T HEAR THEM (TOTAL TIME: 4 MINS APPROX). I REALIZED THE ERROR AND WENT BACK TO HEADSETS. THEY SAID THEY WERE TRYING TO CALL US 5 DIFFERENT TIMES. NO TFC CONFLICTS WERE INVOLVED. BECAUSE OF THE LACK OF REGULAR OXYGEN MASK USE, I MISSED PERFORMING THE EXACT AUDIO SELECTION REQUIRED FOR THAT MODE OF OP.
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.