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A pilot reports that failing to reset his altimeter on a mountainous terrain approach made him fly at 500 ft above the terrain IMC. ATC changed approach types.
| Attributes | |
| ACN | 758579 |
| Time | |
| Date | 200710 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 500 |
| Environment | |
| Flight Conditions | IMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : zzz.tracon tower : zzz.tower |
| Operator | general aviation : corporate |
| Make Model Name | Small Transport |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument non precision |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : single pilot |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 40 flight time total : 14300 flight time type : 40 |
| ASRS Report | 758579 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude altitude deviation : crossing restriction not met non adherence : company policies non adherence : published procedure non adherence : far |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : returned to assigned altitude |
| Supplementary | |
| Problem Areas | Airport Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Transitioning from the GPS-C to a change by approach to the localizer DME-east approach was warned I was either 500 ft below published altitude for the segment or I was on or 500 ft above terrain. I did not reset altitude alerter to new altitude because of the approach change and little time. There was little time due to close proximity south of ZZZ. Chain of events: approach told me I was too low after vectoring me 270 degrees to intercept the localizer. Once on the localizer I was warned and I climbed back to approximately 11200 ft. Human factors: WX below ATIS and change in expected approach in the last few mins of the flight.
Original NASA ASRS Text
Title: A PILOT REPORTS THAT FAILING TO RESET HIS ALTIMETER ON A MOUNTAINOUS TERRAIN APCH MADE HIM FLY AT 500 FT ABOVE THE TERRAIN IMC. ATC CHANGED APCH TYPES.
Narrative: TRANSITIONING FROM THE GPS-C TO A CHANGE BY APCH TO THE LOC DME-E APCH WAS WARNED I WAS EITHER 500 FT BELOW PUBLISHED ALT FOR THE SEGMENT OR I WAS ON OR 500 FT ABOVE TERRAIN. I DID NOT RESET ALT ALERTER TO NEW ALT BECAUSE OF THE APCH CHANGE AND LITTLE TIME. THERE WAS LITTLE TIME DUE TO CLOSE PROX S OF ZZZ. CHAIN OF EVENTS: APCH TOLD ME I WAS TOO LOW AFTER VECTORING ME 270 DEGS TO INTERCEPT THE LOC. ONCE ON THE LOC I WAS WARNED AND I CLBED BACK TO APPROX 11200 FT. HUMAN FACTORS: WX BELOW ATIS AND CHANGE IN EXPECTED APCH IN THE LAST FEW MINS OF THE FLT.
Data retrieved from NASA's ASRS site as of January 2009 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.