 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Crew concept is illustrated in a scenario that has a co-pilot calling for clarification of a descent clearance that he thinks the captain understands in error.
| Attributes | |
| ACN | 522010 |
| Time | |
| Date | 200108 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : atl.airport |
| State Reference | GA |
| Altitude | msl bound lower : 4700 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Dusk |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument precision arrival : 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 : 120 flight time total : 8500 flight time type : 500 |
| ASRS Report | 522010 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Resolutory Action | flight crew : returned to assigned altitude flight crew : became reoriented |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Flight on radar vectors for ILS runway 26R to atl. Aircraft level at 5000 ft MSL, 180 KIAS, heading 180 degrees. Captain was PF. Approach clearance was received, and captain believed he had heard 'turn right heading 240 degrees, intercept localizer runway 26R, cross freal at 4000 ft, cleared ILS runway 26R approach.' (freal is D 13.6.) captain turned aircraft, armed approach and said 'starting down to 4000 ft' after putting 4000 ft in MCP. Actual clearance was 'maintain 5000 ft to freal.' first officer, believing captain in error, asked repeat of altitude at freal. Aircraft had descended to 4700 ft MSL when correct clearance was repeated and acknowledged. Captain corrected back to 5000 ft and continued approach and landing. Contributing factor was runway change by ATC. Crew had been assigned ILS runway 27L (initial altitude 4000 ft) and change to runway 26R came within 15 NM of airport with little time for briefing. Good catch by first officer, properly getting repeat of clearance, caught error and kept deviation to 300 ft.
Original NASA ASRS Text
Title: CREW CONCEPT IS ILLUSTRATED IN A SCENARIO THAT HAS A CO-PLT CALLING FOR CLARIFICATION OF A DSCNT CLRNC THAT HE THINKS THE CAPT UNDERSTANDS IN ERROR.
Narrative: FLT ON RADAR VECTORS FOR ILS RWY 26R TO ATL. ACFT LEVEL AT 5000 FT MSL, 180 KIAS, HDG 180 DEGS. CAPT WAS PF. APCH CLRNC WAS RECEIVED, AND CAPT BELIEVED HE HAD HEARD 'TURN R HDG 240 DEGS, INTERCEPT LOC RWY 26R, CROSS FREAL AT 4000 FT, CLRED ILS RWY 26R APCH.' (FREAL IS D 13.6.) CAPT TURNED ACFT, ARMED APCH AND SAID 'STARTING DOWN TO 4000 FT' AFTER PUTTING 4000 FT IN MCP. ACTUAL CLRNC WAS 'MAINTAIN 5000 FT TO FREAL.' FO, BELIEVING CAPT IN ERROR, ASKED REPEAT OF ALT AT FREAL. ACFT HAD DSNDED TO 4700 FT MSL WHEN CORRECT CLRNC WAS REPEATED AND ACKNOWLEDGED. CAPT CORRECTED BACK TO 5000 FT AND CONTINUED APCH AND LNDG. CONTRIBUTING FACTOR WAS RWY CHANGE BY ATC. CREW HAD BEEN ASSIGNED ILS RWY 27L (INITIAL ALT 4000 FT) AND CHANGE TO RWY 26R CAME WITHIN 15 NM OF ARPT WITH LITTLE TIME FOR BRIEFING. GOOD CATCH BY FO, PROPERLY GETTING REPEAT OF CLRNC, CAUGHT ERROR AND KEPT DEV TO 300 FT.
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.