What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Description :privacy data omitted was holding at mhe VOR at 5,000 ft. assigned by zmp as lower traffic privacy data omitted was cleared for the approach at kmhe starting at a lower altitude of 4,000FT . Radar tracking on the falcon application showed privacy data omitteddeviating below his assigned altitude in the hold to an altitude of 4,200FT on the turn outbound in the hold'(this showed on falcon radar display as occurring in milliseconds! ) iic interviewed deviating pilot who stated that the autopilot altitude hold had disengaed at that time,and he had only deviated 200FT low and had immediately corrected back to his assigned altitude on the call from zmp. This constituted an altitude deviation by privacy data omitted. Causal/contributing factors: iic believes that the autopilot malfunction and possible mode c altitude malfunction was the main cause of this deviation. A possible lack of pilot vigilance in the hold contributed to this deviation. Corrective action: pilot is a trained professional with proper checking and instrument currency, and is an active CFI, iic counseled pilot on altitude maintaining vigilance in IMC traffic situations while holding. Iic also suggested autopilot and altimeter transponder checks after his review of falcon altitude display which seemed to be physically impossible' no further comments. Sas ar#GL27202201297
As the FAA filed it
DESCRIPTION :^PRIVACY DATA OMITTED^ WAS HOLDING AT MHE VOR AT 5,000 FT. ASSIGNED BY ZMP AS LOWER TRAFFIC ^PRIVACY DATA OMITTED^ WAS CLEARED FOR THE APPROACH AT KMHE STARTING AT A LOWER ALTITUDE OF 4,000FT . RADAR TRACKING ON THE FALCON APPLICATION SHOWED ^PRIVACY DATA OMITTED^DEVIATING BELOW HIS ASSIGNED ALTITUDE IN THE HOLD TO AN ALTITUDE OF 4,200FT ON THE TURN OUTBOUND IN THE HOLD'(THIS SHOWED ON FALCON RADAR DISPLAY AS OCCURRING IN MILLISECONDS! ) IIC INTERVIEWED DEVIATING PILOT WHO STATED THAT THE AUTOPILOT ALTITUDE HOLD HAD DISENGAED AT THAT TIME,AND HE HAD ONLY DEVIATED 200FT LOW AND HAD IMMEDIATELY CORRECTED BACK TO HIS ASSIGNED ALTITUDE ON THE CALL FROM ZMP. THIS CONSTITUTED AN ALTITUDE DEVIATION BY ^PRIVACY DATA OMITTED^. CAUSAL/CONTRIBUTING FACTORS: IIC BELIEVES THAT THE AUTOPILOT MALFUNCTION AND POSSIBLE MODE C ALTITUDE MALFUNCTION WAS THE MAIN CAUSE OF THIS DEVIATION. A POSSIBLE LACK OF PILOT VIGILANCE IN THE HOLD CONTRIBUTED TO THIS DEVIATION. CORRECTIVE ACTION: PILOT IS A TRAINED PROFESSIONAL WITH PROPER CHECKING AND INSTRUMENT CURRENCY, AND IS AN ACTIVE CFI, IIC COUNSELED PILOT ON ALTITUDE MAINTAINING VIGILANCE IN IMC TRAFFIC SITUATIONS WHILE HOLDING. IIC ALSO SUGGESTED AUTOPILOT AND ALTIMETER TRANSPONDER CHECKS AFTER HIS REVIEW OF FALCON ALTITUDE DISPLAY WHICH SEEMED TO BE PHYSICALLY IMPOSSIBLE' NO FURTHER COMMENTS. SAS AR#GL27202201297
Other reports on N2688D · 2
Matched to the same aircraft by N-number and date.