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A B727 flight crew reported severe turbulence on descent into ord. After further review the crew determined the turbulence was moderate but did not correct the report.
| Attributes | |
| ACN | 450421 |
| Time | |
| Date | 199909 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : oxi.vor |
| State Reference | IN |
| Altitude | msl bound lower : 18000 msl bound upper : 22000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : descent cruise : enroute altitude change |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : multi engine pilot : atp pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 220 flight time total : 14800 flight time type : 3400 |
| ASRS Report | 450421 |
| Person 2 | |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 160 flight time total : 9500 flight time type : 1500 |
| ASRS Report | 450724 |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other flight crewa other flight crewb other other : 3 |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
During descent into ord, we encountered brief, jolting turbulence of 30 seconds to 1 min duration. First officer reported this as 'severe' to ARTCC, and at my direction, so sent ACARS message to dispatch. Upon debriefing, we determined that the turbulence more accurately fit the description of 'moderate turbulence.' aircraft control was never in doubt, and no injuries or damage were suspected or incurred. We failed to make the aircraft logbook entry required by our flight operations manual for 'severe turbulence,' or update ATC or dispatch.
Original NASA ASRS Text
Title: A B727 FLC RPTED SEVERE TURB ON DSCNT INTO ORD. AFTER FURTHER REVIEW THE CREW DETERMINED THE TURB WAS MODERATE BUT DID NOT CORRECT THE RPT.
Narrative: DURING DSCNT INTO ORD, WE ENCOUNTERED BRIEF, JOLTING TURB OF 30 SECONDS TO 1 MIN DURATION. FO RPTED THIS AS 'SEVERE' TO ARTCC, AND AT MY DIRECTION, SO SENT ACARS MESSAGE TO DISPATCH. UPON DEBRIEFING, WE DETERMINED THAT THE TURB MORE ACCURATELY FIT THE DESCRIPTION OF 'MODERATE TURB.' ACFT CTL WAS NEVER IN DOUBT, AND NO INJURIES OR DAMAGE WERE SUSPECTED OR INCURRED. WE FAILED TO MAKE THE ACFT LOGBOOK ENTRY REQUIRED BY OUR FLT OPS MANUAL FOR 'SEVERE TURB,' OR UPDATE ATC OR DISPATCH.
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.