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An LR35 has a less severe near midair collision with an small aircraft in day, oh, airspace and has an altitude deviation.
| Attributes | |
| ACN | 383090 |
| Time | |
| Date | 199710 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : day |
| State Reference | OH |
| Altitude | msl bound lower : 3600 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : day |
| Operator | common carrier : air taxi |
| Make Model Name | Learjet 35 |
| Operating Under FAR Part | Part 135 |
| Flight Phase | descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Cessna Single Piston Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 90 flight time total : 3900 flight time type : 1350 |
| ASRS Report | 383090 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : became reoriented |
| Consequence | Other |
| Miss Distance | vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were flying an LR35 on an IFR flight plan en route to day. We were talking to day approach on a close in downwind vector at 6000 ft. This was for, as we were told, a single engine cessna transiting the class C at 4000 ft below us. We never saw this aircraft. When we were clear of the aircraft, ATC told us to descend to 4000 ft. We did, and then they gave us a base turn within a couple mi from the airport, which put us very high on base with a field elevation of approximately 1000 ft. I was the PNF and read back the clearance with the additive of clear for the 'visual' for which I thought I heard and expected to hear and read it back to the PF, which he thought he heard the same thing. This was going to be a landing on the far parallel. Anyway, there was a single engine cessna doing a practice instrument approach on the near parallel within 1 mi of our position as we turned base and started descending. We were within 500 ft of the cessna. ATC came back and instructed us to climb to 4000 ft. We were descending through 3600 ft. We did and landed without incident. We (the crew) thought we heard 'cleared for visual' because of our close proximity to the airport. We assumed something because of our situation, which you must not do in aviation.
Original NASA ASRS Text
Title: AN LR35 HAS A LESS SEVERE NMAC WITH AN SMA IN DAY, OH, AIRSPACE AND HAS AN ALTDEV.
Narrative: WE WERE FLYING AN LR35 ON AN IFR FLT PLAN ENRTE TO DAY. WE WERE TALKING TO DAY APCH ON A CLOSE IN DOWNWIND VECTOR AT 6000 FT. THIS WAS FOR, AS WE WERE TOLD, A SINGLE ENG CESSNA TRANSITING THE CLASS C AT 4000 FT BELOW US. WE NEVER SAW THIS ACFT. WHEN WE WERE CLR OF THE ACFT, ATC TOLD US TO DSND TO 4000 FT. WE DID, AND THEN THEY GAVE US A BASE TURN WITHIN A COUPLE MI FROM THE ARPT, WHICH PUT US VERY HIGH ON BASE WITH A FIELD ELEVATION OF APPROX 1000 FT. I WAS THE PNF AND READ BACK THE CLRNC WITH THE ADDITIVE OF CLR FOR THE 'VISUAL' FOR WHICH I THOUGHT I HEARD AND EXPECTED TO HEAR AND READ IT BACK TO THE PF, WHICH HE THOUGHT HE HEARD THE SAME THING. THIS WAS GOING TO BE A LNDG ON THE FAR PARALLEL. ANYWAY, THERE WAS A SINGLE ENG CESSNA DOING A PRACTICE INST APCH ON THE NEAR PARALLEL WITHIN 1 MI OF OUR POS AS WE TURNED BASE AND STARTED DSNDING. WE WERE WITHIN 500 FT OF THE CESSNA. ATC CAME BACK AND INSTRUCTED US TO CLB TO 4000 FT. WE WERE DSNDING THROUGH 3600 FT. WE DID AND LANDED WITHOUT INCIDENT. WE (THE CREW) THOUGHT WE HEARD 'CLRED FOR VISUAL' BECAUSE OF OUR CLOSE PROX TO THE ARPT. WE ASSUMED SOMETHING BECAUSE OF OUR SIT, WHICH YOU MUST NOT DO IN AVIATION.
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.