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LR60 flight crew encounters moderate turbulence; has altitude excursion and TCAS RA is executed by MD88 flight crew.
| Attributes | |
| ACN | 732976 |
| Time | |
| Date | 200703 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : sby.vortac |
| State Reference | MD |
| Altitude | msl bound lower : 34000 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Turbulence |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Learjet 60 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : developmental |
| Experience | controller radar : 4 |
| ASRS Report | 732976 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe inflight encounter : turbulence non adherence : clearance |
| Independent Detector | aircraft equipment : tcas other controllera |
| Resolutory Action | flight crew : took precautionary avoidance action |
| Miss Distance | horizontal : 6000 vertical : 400 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Weather |
| Primary Problem | Ambiguous |
Narrative:
LR60 was level FL340 southbound and encountered moderate turbulence which resulted in nearly 700 ft climb. MD88 was level FL350 northbound head on with LR60. MD88 responded to TCAS and climbed.
Original NASA ASRS Text
Title: LR60 FLT CREW ENCOUNTERS MODERATE TURB; HAS ALT EXCURSION AND TCAS RA IS EXECUTED BY MD88 FLT CREW.
Narrative: LR60 WAS LEVEL FL340 SOUTHBOUND AND ENCOUNTERED MODERATE TURB WHICH RESULTED IN NEARLY 700 FT CLB. MD88 WAS LEVEL FL350 NORTHBOUND HEAD ON WITH LR60. MD88 RESPONDED TO TCAS AND CLBED.
Data retrieved from NASA's ASRS site as of January 2009 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.