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Charter light transport is questioned twice by ATC about the aircraft's altitude. Pilot maintains the altitude was correct as cleared so the problem must be with ATC equipment.
| Attributes | |
| ACN | 198185 |
| Time | |
| Date | 199201 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : teb |
| State Reference | NY |
| Altitude | msl bound lower : 1500 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90 tower : sfo |
| Operator | general aviation : instructional |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach descent other landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 8000 flight time type : 4500 |
| ASRS Report | 198185 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
On approach into teb runway 6 ILS the controller asked us to cross dandy intersection at 1500 ft. I was at 1500 about 1 mi from dandy. My last altitude before descent was 200 ft. When we crossed dandy the controller asked why we did not cross dandy at 1500 ft and I told him that I was at 1500 ft which my altimeter was reading. I also confirmed the altimeter setting on our departure when we were asked to climb from 2000 ft to 6000 ft. The controller asked us to please start our climb out of 2000 ft. At that time we were already out of 4500 ft which I told him. There was no problem. I believe they had a problem with their equipment on the approach into teb because as you can see both times my aircraft was not at 2000 ft when they thought we were.
Original NASA ASRS Text
Title: CHARTER LTT IS QUESTIONED TWICE BY ATC ABOUT THE ACFT'S ALT. PLT MAINTAINS THE ALT WAS CORRECT AS CLRED SO THE PROBLEM MUST BE WITH ATC EQUIP.
Narrative: ON APCH INTO TEB RWY 6 ILS THE CTLR ASKED US TO CROSS DANDY INTXN AT 1500 FT. I WAS AT 1500 ABOUT 1 MI FROM DANDY. MY LAST ALT BEFORE DSCNT WAS 200 FT. WHEN WE CROSSED DANDY THE CTLR ASKED WHY WE DID NOT CROSS DANDY AT 1500 FT AND I TOLD HIM THAT I WAS AT 1500 FT WHICH MY ALTIMETER WAS READING. I ALSO CONFIRMED THE ALTIMETER SETTING ON OUR DEP WHEN WE WERE ASKED TO CLB FROM 2000 FT TO 6000 FT. THE CTLR ASKED US TO PLEASE START OUR CLB OUT OF 2000 FT. AT THAT TIME WE WERE ALREADY OUT OF 4500 FT WHICH I TOLD HIM. THERE WAS NO PROBLEM. I BELIEVE THEY HAD A PROBLEM WITH THEIR EQUIP ON THE APCH INTO TEB BECAUSE AS YOU CAN SEE BOTH TIMES MY ACFT WAS NOT AT 2000 FT WHEN THEY THOUGHT WE WERE.
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.