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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Attributes | |
ACN | 90490 |
Time | |
Date | 198807 |
Day | Sat |
Local Time Of Day | 1201 To 1800 |
Place | |
Locale Reference | airport : dab |
State Reference | FL |
Altitude | msl bound lower : 13000 msl bound upper : 13500 |
Environment | |
Flight Conditions | VMC |
Light | Daylight |
Aircraft 1 | |
Controlling Facilities | artcc : zjx |
Operator | common carrier : air carrier |
Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
Flight Phase | climbout : intermediate altitude cruise other |
Route In Use | enroute : on vectors |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Qualification | pilot : commercial pilot : instrument |
Experience | flight time last 90 days : 200 flight time total : 9000 |
ASRS Report | 90490 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Qualification | pilot : atp |
Events | |
Anomaly | aircraft equipment problem : critical non adherence : clearance |
Independent Detector | other flight crewa |
Resolutory Action | flight crew : returned to intended course or assigned course flight crew : overcame equipment problem |
Consequence | Other |
Supplementary | |
Primary Problem | Aircraft |
Air Traffic Incident | Pilot Deviation other |
Narrative:
After departing dab on ZJX, a clearance was received to intercept J53 from approximately 300 degree heading. While checking the hi chart I called out the aircraft passing through 13000', which was the clearance altitude on first officer's altimeter. After checking the captain's altimeters, I realized the captain's system was in error. The #1 altimeter was fluctuating as much as 2000' low and the #2 altimeter in corrected mode was also reading low. Captain initiated level off and selected standby on #2 altimeter. This altimeter reading then agreed with first officer altimeter. ATC reported mode C still reading less than 13000'. The altitude alert system was not activated. Aircraft was flown on to atl with captain altimeter in standby. Aircraft was written up and turned over to maintenance.
Original NASA ASRS Text
Title: MLG OVERHOT ASSIGNED ALT DURING CLIMB.
Narrative: AFTER DEPARTING DAB ON ZJX, A CLRNC WAS RECEIVED TO INTERCEPT J53 FROM APPROX 300 DEG HDG. WHILE CHKING THE HI CHART I CALLED OUT THE ACFT PASSING THROUGH 13000', WHICH WAS THE CLRNC ALT ON F/O'S ALTIMETER. AFTER CHKING THE CAPT'S ALTIMETERS, I REALIZED THE CAPT'S SYS WAS IN ERROR. THE #1 ALTIMETER WAS FLUCTUATING AS MUCH AS 2000' LOW AND THE #2 ALTIMETER IN CORRECTED MODE WAS ALSO READING LOW. CAPT INITIATED LEVEL OFF AND SELECTED STANDBY ON #2 ALTIMETER. THIS ALTIMETER READING THEN AGREED WITH F/O ALTIMETER. ATC RPTED MODE C STILL READING LESS THAN 13000'. THE ALT ALERT SYS WAS NOT ACTIVATED. ACFT WAS FLOWN ON TO ATL WITH CAPT ALTIMETER IN STANDBY. ACFT WAS WRITTEN UP AND TURNED OVER TO MAINT.
Data retrieved from NASA's ASRS site as of August 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.