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Passenger observer, pilot qualified, notes that the single pilot of a B76 duchess busted his MDA limits of 450 ft on an early am non precision approach to dab.
| Attributes | |
| ACN | 623848 |
| Time | |
| Date | 200407 |
| Day | Thu |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : dab.airport |
| State Reference | FL |
| Altitude | msl bound lower : 350 msl bound upper : 460 |
| Environment | |
| Flight Conditions | IMC |
| Light | Dawn |
| Aircraft 1 | |
| Controlling Facilities | tracon : dab.tracon |
| Operator | general aviation : personal |
| Make Model Name | Duchess 76 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | ils localizer only : 25r |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument non precision |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | observation : passenger |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 50 flight time total : 355 flight time type : 25 |
| ASRS Report | 623848 |
| Person 2 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Passenger Human Performance Flight Crew Human Performance Environmental Factor Weather |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
I was a front seat passenger on the airplane but am a pilot myself. After flying all night, we started out on a visual approach but the visibility dropped from 4 mi to 2 mi. While being vectored to final we were given a non precision approach at the last min. The MDA was 460 ft MSL but the PF allowed the airplane to descend to 358 ft MSL before we saw required visual cues to legally have gone below MDA. We landed without incident. I should have been monitoring the conduct of the approach but, due to fatigue and rushed circumstances, I failed to notify the PF of his premature descent below MDA.
Original NASA ASRS Text
Title: PAX OBSERVER, PLT QUALIFIED, NOTES THAT THE SINGLE PLT OF A B76 DUCHESS BUSTED HIS MDA LIMITS OF 450 FT ON AN EARLY AM NON PRECISION APCH TO DAB.
Narrative: I WAS A FRONT SEAT PAX ON THE AIRPLANE BUT AM A PLT MYSELF. AFTER FLYING ALL NIGHT, WE STARTED OUT ON A VISUAL APCH BUT THE VISIBILITY DROPPED FROM 4 MI TO 2 MI. WHILE BEING VECTORED TO FINAL WE WERE GIVEN A NON PRECISION APCH AT THE LAST MIN. THE MDA WAS 460 FT MSL BUT THE PF ALLOWED THE AIRPLANE TO DSND TO 358 FT MSL BEFORE WE SAW REQUIRED VISUAL CUES TO LEGALLY HAVE GONE BELOW MDA. WE LANDED WITHOUT INCIDENT. I SHOULD HAVE BEEN MONITORING THE CONDUCT OF THE APCH BUT, DUE TO FATIGUE AND RUSHED CIRCUMSTANCES, I FAILED TO NOTIFY THE PF OF HIS PREMATURE DSCNT BELOW MDA.
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.