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Flight crew of medium large transport on vectored approach to ILS at cmh had low altitude warning from approach controller.
| Attributes | |
| ACN | 199165 |
| Time | |
| Date | 199201 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : cmh |
| State Reference | OH |
| Altitude | msl bound lower : 2400 msl bound upper : 2700 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : cmh |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach descent other |
| Route In Use | arrival other enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : commercial pilot : cfi pilot : atp pilot : instrument |
| Experience | flight time last 90 days : 150 flight time total : 15000 flight time type : 1500 |
| ASRS Report | 199165 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude altitude deviation : overshoot other anomaly other |
| Independent Detector | other controllera other flight crewa |
| 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 |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
At top of descent the approach for landing at cmh ILS 10R was briefed per company operations manual. Altitudes for the approach (including OM crossing altitude) were covered. While being vectored downwind a strong (approximately 40 KT) headwind was noted. The ground winds were reported from 160 degrees. Approximately 10 KTS we were descended to 3000 and turned for a base leg. Prior to reaching 3000 ft we were vectored to final and cleared for the approach. At this point we were cleared to descend to 2700. The PNF understood, read back, and reset altitude alerter to 2000 ft. The digital flight guidance in the medium large transport was having trouble keeping up with the maneuvering due to the winds. When the aircraft did not level at 3000 ft as I had expected. I questioned the first officer who stated we were reclred to 2000. Due to the high workload at the time I was unable to question the altitude before we triggered the low altitude alert. The medium large transport has numerous (loud) aural voice warnings that frequently cover ATC transmissions. I immediately climbed manually and captured/flew the ILS approach. I called and discussed the matter with the approach controller/supervisor. He felt they should not be clearing aircraft from 3000 ft to 2700 ft since it causes problems.
Original NASA ASRS Text
Title: FLC OF MLG ON VECTORED APCH TO ILS AT CMH HAD LOW ALT WARNING FROM APCH CTLR.
Narrative: AT TOP OF DSCNT THE APCH FOR LNDG AT CMH ILS 10R WAS BRIEFED PER COMPANY OPS MANUAL. ALTS FOR THE APCH (INCLUDING OM XING ALT) WERE COVERED. WHILE BEING VECTORED DOWNWIND A STRONG (APPROX 40 KT) HEADWIND WAS NOTED. THE GND WINDS WERE RPTED FROM 160 DEGS. APPROX 10 KTS WE WERE DSNDED TO 3000 AND TURNED FOR A BASE LEG. PRIOR TO REACHING 3000 FT WE WERE VECTORED TO FINAL AND CLRED FOR THE APCH. AT THIS POINT WE WERE CLRED TO DSND TO 2700. THE PNF UNDERSTOOD, READ BACK, AND RESET ALT ALERTER TO 2000 FT. THE DIGITAL FLT GUIDANCE IN THE MLG WAS HAVING TROUBLE KEEPING UP WITH THE MANEUVERING DUE TO THE WINDS. WHEN THE ACFT DID NOT LEVEL AT 3000 FT AS I HAD EXPECTED. I QUESTIONED THE FO WHO STATED WE WERE RECLRED TO 2000. DUE TO THE HIGH WORKLOAD AT THE TIME I WAS UNABLE TO QUESTION THE ALT BEFORE WE TRIGGERED THE LOW ALT ALERT. THE MLG HAS NUMEROUS (LOUD) AURAL VOICE WARNINGS THAT FREQUENTLY COVER ATC TRANSMISSIONS. I IMMEDIATELY CLBED MANUALLY AND CAPTURED/FLEW THE ILS APCH. I CALLED AND DISCUSSED THE MATTER WITH THE APCH CTLR/SUPVR. HE FELT THEY SHOULD NOT BE CLRING ACFT FROM 3000 FT TO 2700 FT SINCE IT CAUSES PROBLEMS.
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.