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Air carrier ATR-42 flight crew has a problem with parachute jumping activity aircraft on V-8 airway. Near midair collision.
| Attributes | |
| ACN | 269534 |
| Time | |
| Date | 199404 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : jot |
| State Reference | IL |
| Altitude | msl bound lower : 9000 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau |
| Operator | common carrier : air carrier |
| Make Model Name | ATR 42 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute airway : v8 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : instructional |
| Make Model Name | Twin Otter DHC-6 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other descent other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 4450 flight time type : 1000 |
| ASRS Report | 269534 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : nmac non adherence : clearance non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 500 vertical : 0 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
A twin otter jump plane in a steep spiral descended through our altitude and within 500 ft. ATC advised jump plane not to release jumpers due to the fact that we were within 4 mi. He let the jumpers go anyway. ATC advised jump plane to maintain 14000 ft. Because we were close. He disregarded and descended through our altitude anyway. I responded to a traffic alert TCASII. I saw the twin otter in the steep spiral diving. Then responded to an RA of 'descend' I also slowed and turned away. After the jump plane was through our altitude, responded to 'climb' RA. We did not go plus/minus 100 ft 9000 ft. Require jump planes to follow ATC requests, not just advise flight crew of intentions.
Original NASA ASRS Text
Title: ACR ATR-42 FLC HAS A PROB WITH PARACHUTE JUMPING ACTIVITY ACFT ON V-8 AIRWAY. NMAC.
Narrative: A TWIN OTTER JUMP PLANE IN A STEEP SPIRAL DSNDED THROUGH OUR ALT AND WITHIN 500 FT. ATC ADVISED JUMP PLANE NOT TO RELEASE JUMPERS DUE TO THE FACT THAT WE WERE WITHIN 4 MI. HE LET THE JUMPERS GO ANYWAY. ATC ADVISED JUMP PLANE TO MAINTAIN 14000 FT. BECAUSE WE WERE CLOSE. HE DISREGARDED AND DSNDED THROUGH OUR ALT ANYWAY. I RESPONDED TO A TFC ALERT TCASII. I SAW THE TWIN OTTER IN THE STEEP SPIRAL DIVING. THEN RESPONDED TO AN RA OF 'DSND' I ALSO SLOWED AND TURNED AWAY. AFTER THE JUMP PLANE WAS THROUGH OUR ALT, RESPONDED TO 'CLB' RA. WE DID NOT GO PLUS/MINUS 100 FT 9000 FT. REQUIRE JUMP PLANES TO FOLLOW ATC REQUESTS, NOT JUST ADVISE FLC OF INTENTIONS.
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.