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Altitude overshot when a B737-400 flight crew sets the wrong altimeter setting for a visual approach to runway 6 at anc, ak.
| Attributes | |
| ACN | 599318 |
| Time | |
| Date | 200311 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : bob.ndb |
| State Reference | AK |
| Altitude | msl bound lower : 1200 msl bound upper : 1600 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Rain |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zan.artcc tracon : a11.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other ndb |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : multi engine |
| ASRS Report | 599318 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 599315 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance non adherence : company policies non adherence : far other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued advisory flight crew : became reoriented flight crew : returned to assigned altitude |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On descent for arrival to anc, I copied the arrival ATIS incorrectly. The altimeter setting on the ATIS was actually 30.04, I copied it as 30.40. After vectors to a visual approach to runway 6R, anc approach cleared us for a visual approach to runway 6R with the constraint 'maintain 1600 ft until established.' when we were in the vicinity of the NDB bob, anc approach called and queried us about our indicated altitude. We responded that we were showing 1600 ft on our altimeters and asked what approach was showing on his radar. He responded that he showed us at 1200 ft and repeated the altimeter setting 30.04. We corrected our altimeter settings and climbed up to 1600 ft and continued the approach and landing without further incident. Supplemental information from acn 599315: we both were commenting about the large difference in settings between fai and anc without any strong winds or turbulence in the area. Next time I'll also look closer at the radar altimeter as AGL/MSL xchk is also of real value.
Original NASA ASRS Text
Title: ALT OVERSHOT WHEN A B737-400 FLT CREW SETS THE WRONG ALTIMETER SETTING FOR A VISUAL APCH TO RWY 6 AT ANC, AK.
Narrative: ON DSCNT FOR ARR TO ANC, I COPIED THE ARR ATIS INCORRECTLY. THE ALTIMETER SETTING ON THE ATIS WAS ACTUALLY 30.04, I COPIED IT AS 30.40. AFTER VECTORS TO A VISUAL APCH TO RWY 6R, ANC APCH CLRED US FOR A VISUAL APCH TO RWY 6R WITH THE CONSTRAINT 'MAINTAIN 1600 FT UNTIL ESTABLISHED.' WHEN WE WERE IN THE VICINITY OF THE NDB BOB, ANC APCH CALLED AND QUERIED US ABOUT OUR INDICATED ALT. WE RESPONDED THAT WE WERE SHOWING 1600 FT ON OUR ALTIMETERS AND ASKED WHAT APCH WAS SHOWING ON HIS RADAR. HE RESPONDED THAT HE SHOWED US AT 1200 FT AND REPEATED THE ALTIMETER SETTING 30.04. WE CORRECTED OUR ALTIMETER SETTINGS AND CLBED UP TO 1600 FT AND CONTINUED THE APCH AND LNDG WITHOUT FURTHER INCIDENT. SUPPLEMENTAL INFO FROM ACN 599315: WE BOTH WERE COMMENTING ABOUT THE LARGE DIFFERENCE IN SETTINGS BTWN FAI AND ANC WITHOUT ANY STRONG WINDS OR TURB IN THE AREA. NEXT TIME I'LL ALSO LOOK CLOSER AT THE RADAR ALTIMETER AS AGL/MSL XCHK IS ALSO OF REAL VALUE.
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.