 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A gulfstream 3 deviates from assigned altitude as it approachs psp, ca. Aircraft was flying in turbulence.
| Attributes | |
| ACN | 356140 |
| Time | |
| Date | 199612 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : psp |
| State Reference | CA |
| Altitude | msl bound lower : 6650 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : psp tower : asu |
| Operator | general aviation : corporate |
| Make Model Name | Gulfstream III |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach descent other |
| Route In Use | enroute airway : v137 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 90 flight time total : 15275 flight time type : 2300 |
| ASRS Report | 356140 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : clearance non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were proceeding east on V137 to psp VOR and were cleared to descend to 7000 ft by psp approach control. I advised approach control that it was bumpy. As we approached leveloff at 7000 ft MSL, the captain and I were distraction by the turbulence, and inadvertently allowed the airplane to descend through our assigned altitude to approximately 6650 ft MSL, before climbing back up to 7000 ft MSL. At approximately 6650 ft MSL I told the controller we were having trouble with our altitude and we were then cleared to 5000 ft MSL. The psp approach controller made no mention of our altitude deviation and it smoothed out at 5000 ft. The remaining portion of our flight and landing at thermal, ca, was normal.
Original NASA ASRS Text
Title: A GULFSTREAM 3 DEVIATES FROM ASSIGNED ALT AS IT APCHS PSP, CA. ACFT WAS FLYING IN TURB.
Narrative: WE WERE PROCEEDING E ON V137 TO PSP VOR AND WERE CLRED TO DSND TO 7000 FT BY PSP APCH CTL. I ADVISED APCH CTL THAT IT WAS BUMPY. AS WE APCHED LEVELOFF AT 7000 FT MSL, THE CAPT AND I WERE DISTR BY THE TURB, AND INADVERTENTLY ALLOWED THE AIRPLANE TO DSND THROUGH OUR ASSIGNED ALT TO APPROX 6650 FT MSL, BEFORE CLBING BACK UP TO 7000 FT MSL. AT APPROX 6650 FT MSL I TOLD THE CTLR WE WERE HAVING TROUBLE WITH OUR ALT AND WE WERE THEN CLRED TO 5000 FT MSL. THE PSP APCH CTLR MADE NO MENTION OF OUR ALTDEV AND IT SMOOTHED OUT AT 5000 FT. THE REMAINING PORTION OF OUR FLT AND LNDG AT THERMAL, CA, WAS NORMAL.
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.