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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Wrong altimeter setting. Instead of setting 29 pt 15, they set 30 pt 15. Because the altimeter was lower than usual, they probably followed habit patterns. Flight crew realized their error and asked for new altitude clearance which was given.
| Attributes | |
| ACN | 331290 |
| Time | |
| Date | 199603 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : esl |
| State Reference | WV |
| Altitude | msl bound lower : 10000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : iad |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : cfi pilot : flight engineer |
| Experience | flight time last 90 days : 220 flight time total : 10500 flight time type : 1100 |
| ASRS Report | 331290 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 17000 flight time type : 1800 |
| ASRS Report | 331273 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We received an altimeter of 29.15 during our descent, upon leaving 18000 ft, 30.15 was mistakenly set. After our leveloff at 11000 ft we became aware of the mistake and corrected it which put us at 10000 ft. A request to approach control to maintain 10000 ft was granted with no apparent conflict. The remainder of the flight was normal.
Original NASA ASRS Text
Title: WRONG ALTIMETER SETTING. INSTEAD OF SETTING 29 PT 15, THEY SET 30 PT 15. BECAUSE THE ALTIMETER WAS LOWER THAN USUAL, THEY PROBABLY FOLLOWED HABIT PATTERNS. FLC REALIZED THEIR ERROR AND ASKED FOR NEW ALT CLRNC WHICH WAS GIVEN.
Narrative: WE RECEIVED AN ALTIMETER OF 29.15 DURING OUR DSCNT, UPON LEAVING 18000 FT, 30.15 WAS MISTAKENLY SET. AFTER OUR LEVELOFF AT 11000 FT WE BECAME AWARE OF THE MISTAKE AND CORRECTED IT WHICH PUT US AT 10000 FT. A REQUEST TO APCH CTL TO MAINTAIN 10000 FT WAS GRANTED WITH NO APPARENT CONFLICT. THE REMAINDER OF THE FLT WAS NORMAL.
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.