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DC9-30 flight crew levels off at FL180 with an incorrect altimeter setting of 29 pt 16. Flight crew corrects altimeter and altitude as controller asks for their altitude.
| Attributes | |
| ACN | 381310 |
| Time | |
| Date | 199709 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : dlh |
| State Reference | MN |
| Altitude | msl bound lower : 18000 msl bound upper : 18700 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dawn |
| Aircraft 1 | |
| Controlling Facilities | artcc : zmp |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | enroute other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 240 flight time total : 2500 flight time type : 1500 |
| ASRS Report | 381310 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 220 flight time total : 11000 flight time type : 3500 |
| ASRS Report | 381508 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance non adherence : published procedure |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : returned to assigned altitude flight crew : became reoriented other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Flight plan was from dlh-msp, filed at FL220. We were given intermediate leveloff at FL180. Upon reaching that altitude, we reset altimeters from 29.16 to 29.92. Our altimeters showed FL187. PNF asked if this (FL180) was our final. He responded that FL180 was our final altitude. We corrected back down to FL180. A few mins later, the controller asked our altitude and I responded 'FL180, 29.92.' he responded 'roger.' would have been a good idea to have anticipated the barometric change earlier. Supplemental information from acn 381508: leveling at FL180, on climb out from dlh, with an altimeter setting of 29.16, ATC asked our altitude when our altimeters were reset to 29.92.
Original NASA ASRS Text
Title: DC9-30 FLC LEVELS OFF AT FL180 WITH AN INCORRECT ALTIMETER SETTING OF 29 PT 16. FLC CORRECTS ALTIMETER AND ALT AS CTLR ASKS FOR THEIR ALT.
Narrative: FLT PLAN WAS FROM DLH-MSP, FILED AT FL220. WE WERE GIVEN INTERMEDIATE LEVELOFF AT FL180. UPON REACHING THAT ALT, WE RESET ALTIMETERS FROM 29.16 TO 29.92. OUR ALTIMETERS SHOWED FL187. PNF ASKED IF THIS (FL180) WAS OUR FINAL. HE RESPONDED THAT FL180 WAS OUR FINAL ALT. WE CORRECTED BACK DOWN TO FL180. A FEW MINS LATER, THE CTLR ASKED OUR ALT AND I RESPONDED 'FL180, 29.92.' HE RESPONDED 'ROGER.' WOULD HAVE BEEN A GOOD IDEA TO HAVE ANTICIPATED THE BAROMETRIC CHANGE EARLIER. SUPPLEMENTAL INFO FROM ACN 381508: LEVELING AT FL180, ON CLB OUT FROM DLH, WITH AN ALTIMETER SETTING OF 29.16, ATC ASKED OUR ALT WHEN OUR ALTIMETERS WERE RESET TO 29.92.
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.