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Air carrier thinks cleared to altitude which is the missed approach altitude, while being vectored for ILS approach behind other aircraft.
| Attributes | |
| ACN | 203596 |
| Time | |
| Date | 199202 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : unv |
| State Reference | PA |
| Altitude | msl bound lower : 4000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Transport, High Wing, 2 Turboprop Eng |
| Flight Phase | descent : approach descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 13000 flight time type : 300 |
| ASRS Report | 203596 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : atp pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Were being radar vectored for ILS 24 approach at unv to follow another aircraft on the approach ahead of us. Had descended to 4000 ft when center asked us what our altitude was. We replied 4000 ft. At that time center told us to climb back to 5000 ft as 4000 ft was the altitude the aircraft ahead of us would be climbing to if he had to perform a missed approach. We climbed back to 5000 ft and continued the approach after the other aircraft was on the ground. Both the first officer and myself are sure we received clearance to 4000 ft, but without hearing the ATC tapes, we cannot tell if we both made a mistake or if the controller indeed gave us 4000 ft. In the future I am going to make an extra effort to note any assigned clearance with that of the missed approach profile as doing this would have shown that 4000 ft was not an appropriate altitude in this particular event.
Original NASA ASRS Text
Title: ACR THINKS CLRED TO ALT WHICH IS THE MISSED APCH ALT, WHILE BEING VECTORED FOR ILS APCH BEHIND OTHER ACFT.
Narrative: WERE BEING RADAR VECTORED FOR ILS 24 APCH AT UNV TO FOLLOW ANOTHER ACFT ON THE APCH AHEAD OF US. HAD DSNDED TO 4000 FT WHEN CTR ASKED US WHAT OUR ALT WAS. WE REPLIED 4000 FT. AT THAT TIME CTR TOLD US TO CLB BACK TO 5000 FT AS 4000 FT WAS THE ALT THE ACFT AHEAD OF US WOULD BE CLBING TO IF HE HAD TO PERFORM A MISSED APCH. WE CLBED BACK TO 5000 FT AND CONTINUED THE APCH AFTER THE OTHER ACFT WAS ON THE GND. BOTH THE FO AND MYSELF ARE SURE WE RECEIVED CLRNC TO 4000 FT, BUT WITHOUT HEARING THE ATC TAPES, WE CANNOT TELL IF WE BOTH MADE A MISTAKE OR IF THE CTLR INDEED GAVE US 4000 FT. IN THE FUTURE I AM GOING TO MAKE AN EXTRA EFFORT TO NOTE ANY ASSIGNED CLRNC WITH THAT OF THE MISSED APCH PROFILE AS DOING THIS WOULD HAVE SHOWN THAT 4000 FT WAS NOT AN APPROPRIATE ALT IN THIS PARTICULAR EVENT.
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.