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Flight crew of a B757 undershot assigned altitude on STAR arrival due to copying and setting the wrong altimeter setting provided by approach control. Only after approach controller intervened and requested rptrs to descend to assigned did the captain finally rechk altimeter setting since he believed that he was at assigned.
| Attributes | |
| ACN | 422985 |
| Time | |
| Date | 199812 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : ogd airport : slc |
| State Reference | UT |
| Altitude | msl bound lower : 12000 msl bound upper : 13000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : tus |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Navigation In Use | Other |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star enroute airway : slc |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 200 flight time total : 19000 flight time type : 4000 |
| ASRS Report | 422985 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial |
| Experience | flight time last 90 days : 200 flight time total : 6000 flight time type : 2000 |
| ASRS Report | 422470 |
| Events | |
| Anomaly | altitude deviation : undershoot other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On descent into slc on the brigham city 1 arrival, flight cleared to cross cartr at 15000 ft (landing south). First officer flying and captain on radio. Captain thought approach control gave altimeter setting of 29.63 when given clearance to cross cartr at 15000 ft. Captain read back altitude (15000 ft) and altimeter setting of 29.63. Before leveling at 15000 ft, approach gave us a vector and descent to 12000 ft. Upon reaching 12000 ft approach control said, 'air carrier X, descend to 12000 ft.' captain stated, 'air carrier X level 12000 ft.' approach control said again, 'air carrier X descend to 12000 ft.' captain then asked for current altimeter setting. Approach control stated, ' 30.63, are you descending to 12000 ft, air carrier X?' captain stated, 'air carrier X in descent to 12000 ft.' no traffic conflicts noted. VMC at all times during this sequence of events.
Original NASA ASRS Text
Title: FLC OF A B757 UNDERSHOT ASSIGNED ALT ON STAR ARR DUE TO COPYING AND SETTING THE WRONG ALTIMETER SETTING PROVIDED BY APCH CTL. ONLY AFTER APCH CTLR INTERVENED AND REQUESTED RPTRS TO DSND TO ASSIGNED DID THE CAPT FINALLY RECHK ALTIMETER SETTING SINCE HE BELIEVED THAT HE WAS AT ASSIGNED.
Narrative: ON DSCNT INTO SLC ON THE BRIGHAM CITY 1 ARR, FLT CLRED TO CROSS CARTR AT 15000 FT (LNDG S). FO FLYING AND CAPT ON RADIO. CAPT THOUGHT APCH CTL GAVE ALTIMETER SETTING OF 29.63 WHEN GIVEN CLRNC TO CROSS CARTR AT 15000 FT. CAPT READ BACK ALT (15000 FT) AND ALTIMETER SETTING OF 29.63. BEFORE LEVELING AT 15000 FT, APCH GAVE US A VECTOR AND DSCNT TO 12000 FT. UPON REACHING 12000 FT APCH CTL SAID, 'ACR X, DSND TO 12000 FT.' CAPT STATED, 'ACR X LEVEL 12000 FT.' APCH CTL SAID AGAIN, 'ACR X DSND TO 12000 FT.' CAPT THEN ASKED FOR CURRENT ALTIMETER SETTING. APCH CTL STATED, ' 30.63, ARE YOU DSNDING TO 12000 FT, ACR X?' CAPT STATED, 'ACR X IN DSCNT TO 12000 FT.' NO TFC CONFLICTS NOTED. VMC AT ALL TIMES DURING THIS SEQUENCE OF EVENTS.
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.