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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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An air carrier instructor pilot reports that twice his student descended, while the instructor was distracted, to the point that the GPWS alerted. Each time the instructor took over and performed an escape maneuver.
| Attributes | |
| ACN | 391320 |
| Time | |
| Date | 199801 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : jnu |
| State Reference | AK |
| Altitude | msl bound lower : 2500 msl bound upper : 2500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other cruise other descent : approach |
| Route In Use | approach : visual |
| Flight Plan | VFR |
| Aircraft 2 | |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 91 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain observation : company check pilot oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 40 flight time total : 14000 flight time type : 1100 |
| ASRS Report | 391320 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer instruction : trainee |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude other anomaly other other spatial deviation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Late night training flight, part far 91 regulation. After doing a special departure from juneau we were going out and make a 180 degree turn and land. The aircraft is equipped with enhanced ground proximity system and it was on and showed some terrain in the green band at 12 O'clock position. I vectored the student on a modified procedure turn. I put my head down to get the vref numbers and heard the ground proximity warning, 'caution terrain.' I took over the controls and performed our escape maneuver and gave the jet back to the student. The student allowed the jet to descend again while my head was down. Again the ground proximity went off 'terrain.' once I did our escape maneuver again and flew the airplane to the final approach course and let the student land. There were only 3 of us on board. Another student was in the jump seat. I asked them if they saw the terrain on the enhanced display and they said yes. They thought I would tell them when to turn. I told them to fly the jet first regardless of who is in the left seat (I'm a check airman). I should not have looked away while in that phase of flight with new students unfamiliar with the area.
Original NASA ASRS Text
Title: AN ACR INSTRUCTOR PLT RPTS THAT TWICE HIS STUDENT DSNDED, WHILE THE INSTRUCTOR WAS DISTRACTED, TO THE POINT THAT THE GPWS ALERTED. EACH TIME THE INSTRUCTOR TOOK OVER AND PERFORMED AN ESCAPE MANEUVER.
Narrative: LATE NIGHT TRAINING FLT, PART FAR 91 REG. AFTER DOING A SPECIAL DEP FROM JUNEAU WE WERE GOING OUT AND MAKE A 180 DEG TURN AND LAND. THE ACFT IS EQUIPPED WITH ENHANCED GND PROX SYS AND IT WAS ON AND SHOWED SOME TERRAIN IN THE GREEN BAND AT 12 O'CLOCK POS. I VECTORED THE STUDENT ON A MODIFIED PROC TURN. I PUT MY HEAD DOWN TO GET THE VREF NUMBERS AND HEARD THE GND PROX WARNING, 'CAUTION TERRAIN.' I TOOK OVER THE CTLS AND PERFORMED OUR ESCAPE MANEUVER AND GAVE THE JET BACK TO THE STUDENT. THE STUDENT ALLOWED THE JET TO DSND AGAIN WHILE MY HEAD WAS DOWN. AGAIN THE GND PROX WENT OFF 'TERRAIN.' ONCE I DID OUR ESCAPE MANEUVER AGAIN AND FLEW THE AIRPLANE TO THE FINAL APCH COURSE AND LET THE STUDENT LAND. THERE WERE ONLY 3 OF US ON BOARD. ANOTHER STUDENT WAS IN THE JUMP SEAT. I ASKED THEM IF THEY SAW THE TERRAIN ON THE ENHANCED DISPLAY AND THEY SAID YES. THEY THOUGHT I WOULD TELL THEM WHEN TO TURN. I TOLD THEM TO FLY THE JET FIRST REGARDLESS OF WHO IS IN THE L SEAT (I'M A CHK AIRMAN). I SHOULD NOT HAVE LOOKED AWAY WHILE IN THAT PHASE OF FLT WITH NEW STUDENTS UNFAMILIAR WITH THE AREA.
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.