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An IRS failure captured all of the attention of this flight crew during transition through FL180. The checklist was run for the failure, but not the FL180 checks. The controller notified the flight crew of their altitude deviation altitude overshot.
| Attributes | |
| ACN | 342168 |
| Time | |
| Date | 199607 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : sbj |
| State Reference | NJ |
| Altitude | msl bound lower : 28000 msl bound upper : 28230 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | enroute airway : zny |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 18000 |
| ASRS Report | 342168 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 150 flight time total : 12000 |
| ASRS Report | 342070 |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Air crew forgot to set altimeter to 29.92 after climbing through FL180 to FL280. Aircraft experienced IRS failure. Air crew was performing abnormal checklist and was distraction. Altimeter was inadvertently left at 30.15 inches from the departure airfield. Center controller notified air crew and correction was immediately made.
Original NASA ASRS Text
Title: AN IRS FAILURE CAPTURED ALL OF THE ATTN OF THIS FLC DURING TRANSITION THROUGH FL180. THE CHKLIST WAS RUN FOR THE FAILURE, BUT NOT THE FL180 CHKS. THE CTLR NOTIFIED THE FLC OF THEIR ALTDEV ALT OVERSHOT.
Narrative: AIR CREW FORGOT TO SET ALTIMETER TO 29.92 AFTER CLBING THROUGH FL180 TO FL280. ACFT EXPERIENCED IRS FAILURE. AIR CREW WAS PERFORMING ABNORMAL CHKLIST AND WAS DISTR. ALTIMETER WAS INADVERTENTLY LEFT AT 30.15 INCHES FROM THE DEP AIRFIELD. CTR CTLR NOTIFIED AIR CREW AND CORRECTION WAS IMMEDIATELY MADE.
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.