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A G2 PIC loses altitude during a turn after he had unknowingly disconnected the autoplt, talking with center controller, ZOA, ca.
| Attributes | |
| ACN | 441210 |
| Time | |
| Date | 199906 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : rom.vor |
| State Reference | CA |
| Altitude | msl bound lower : 25650 msl bound upper : 26000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zoa.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Gulfstream II |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| 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 : 100 flight time total : 10350 flight time type : 180 |
| ASRS Report | 441210 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : multi engine pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance |
| Independent Detector | other flight crewa |
| Supplementary | |
| Problem Areas | ATC Human Performance Aircraft Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On a radar imaging flight at FL260 operating across the hunter MOA. We were on pass #4. On all previous passes the course reversals were all southeast of the track line. In the middle of the course reversal, ZOA asked which direction we were going to turn. During the discourse it became obvious the first officer and controller were not communicating. As I reached for the microphone button, I inadvertently brushed the go around button and disconnected the autoplt. Since I was now busy explaining to controller that this reversal was just like the previous 3 reversals, I missed the autoplt disconnect and we lost approximately 350 ft in the reversal turn. As soon as I saw the altitude deviation, we reversed immediately to FL260.
Original NASA ASRS Text
Title: A G2 PIC LOSES ALT DURING A TURN AFTER HE HAD UNKNOWINGLY DISCONNECTED THE AUTOPLT, TALKING WITH CTR CTLR, ZOA, CA.
Narrative: ON A RADAR IMAGING FLT AT FL260 OPERATING ACROSS THE HUNTER MOA. WE WERE ON PASS #4. ON ALL PREVIOUS PASSES THE COURSE REVERSALS WERE ALL SE OF THE TRACK LINE. IN THE MIDDLE OF THE COURSE REVERSAL, ZOA ASKED WHICH DIRECTION WE WERE GOING TO TURN. DURING THE DISCOURSE IT BECAME OBVIOUS THE FO AND CTLR WERE NOT COMMUNICATING. AS I REACHED FOR THE MIKE BUTTON, I INADVERTENTLY BRUSHED THE GAR BUTTON AND DISCONNECTED THE AUTOPLT. SINCE I WAS NOW BUSY EXPLAINING TO CTLR THAT THIS REVERSAL WAS JUST LIKE THE PREVIOUS 3 REVERSALS, I MISSED THE AUTOPLT DISCONNECT AND WE LOST APPROX 350 FT IN THE REVERSAL TURN. AS SOON AS I SAW THE ALTDEV, WE REVERSED IMMEDIATELY TO FL260.
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.