 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
LJ60 flight crew incurred GPS malfunction executing teb dalton departure resulting in altitude overshoot. First officer corrected deviation as N90 alerts crew.
| Attributes | |
| ACN | 627272 |
| Time | |
| Date | 200408 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : teb.airport |
| State Reference | NJ |
| Altitude | msl single value : 3500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Learjet 60 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 118.3 flight time total : 7131.8 flight time type : 2010 |
| ASRS Report | 628272 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance other spatial deviation |
| Independent Detector | atc equipment other atc equipment : radar other controllera other flight crewa |
| Resolutory Action | controller : issued advisory flight crew : became reoriented flight crew : returned to assigned altitude |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
IFR from teb runway 19 dalton departure. Ny departure cleared us from 1300 ft to 3000 ft. During climb, I was cleared direct brezy intersection. Received GPS flag -- notified of a position error. Aircraft was on autoplt with altitude hold selected. Visually comparing my course to brezy versus the captain's when I looked back to my instruments. I caught altitude was at 3300 ft MSL. Immediately initiated corrective action and descended to 3000 ft MSL. Ny contacted us and requested we maintain 3000 ft MSL. No traffic conflicts noted on TCAS (altitude was noted at 3500 ft MSL before climb was reversed). In hindsight, I realized that with less than 1000 ft to level off, any course error would have been minimal and of far less consequence than an altitude deviation in congested airspace.
Original NASA ASRS Text
Title: LJ60 FLT CREW INCURRED GPS MALFUNCTION EXECUTING TEB DALTON DEP RESULTING IN ALT OVERSHOOT. FO CORRECTED DEV AS N90 ALERTS CREW.
Narrative: IFR FROM TEB RWY 19 DALTON DEP. NY DEP CLRED US FROM 1300 FT TO 3000 FT. DURING CLB, I WAS CLRED DIRECT BREZY INTXN. RECEIVED GPS FLAG -- NOTIFIED OF A POS ERROR. ACFT WAS ON AUTOPLT WITH ALT HOLD SELECTED. VISUALLY COMPARING MY COURSE TO BREZY VERSUS THE CAPT'S WHEN I LOOKED BACK TO MY INSTRUMENTS. I CAUGHT ALT WAS AT 3300 FT MSL. IMMEDIATELY INITIATED CORRECTIVE ACTION AND DSNDED TO 3000 FT MSL. NY CONTACTED US AND REQUESTED WE MAINTAIN 3000 FT MSL. NO TFC CONFLICTS NOTED ON TCAS (ALT WAS NOTED AT 3500 FT MSL BEFORE CLB WAS REVERSED). IN HINDSIGHT, I REALIZED THAT WITH LESS THAN 1000 FT TO LEVEL OFF, ANY COURSE ERROR WOULD HAVE BEEN MINIMAL AND OF FAR LESS CONSEQUENCE THAN AN ALT DEVIATION IN CONGESTED AIRSPACE.
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.