# NTSB NYC83IA113: Cessna 402C, N6791Y, Boston, MA, May 14, 1983

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: May 13, 1983, 21:06 local (May 14, 1983, 01:06 UTC)
- Place: Boston, MA
- Location: 42.3584° N, 71.0598° W: Placed by OpenAirDocs: center of Boston, MA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.3584&lon=-71.0598&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 35138
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC83IA113
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/35138/pdf
- Page: https://openairdocs.org/ntsb/NYC83IA113

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of control - in flight, cruise - normal
  - approach control procedure - inadequate (cause)
- Vortex turbulence encountered, cruise - normal

## Analysis

WHILE IN LEVEL FLIGHT A CESSNA 402 PASSED BEHIND AN AIRBUS A-300 IN DESCENT FOR LANDING. THE CESSNA 402 ROLLED INVERTED.THE PILOT REGAINED CONTROL AND LANDED WITHOUT FURTHER INCIDENT AT HIS DESTINATION. BOTH ACFT WERE ON INSTRUMENT FLIGHT PLANS, IN INSTRUMENT CONDITIONS, BEING VECTORED FOR APPROACH. CURRENT FAA ATC PROCEDURES DO NOT STIPULATE CRITERIA FOR APPROPRIATE VERTICAL AND HORIZONTAL CLEARANCE WHEN ON OR OTHER ACFT IS NOT EXECUTING THE SAME FLIGHT PROFILE AS THE OTHER.

## Aircraft

- Registration: N6791Y (not matched to a registry record)
- Reported make and model: CESSNA 402C
- Category: Airplane
- Serial number: 402C0454
- Airframe hours: 2448
- Engines: CONTINENTAL TS10520VB 325 horsepower reciprocating
- Damage: No damage
- Flight: Part 135
- Operator: Provincetown Boston Airlines
- Registered owner: John C. Van Arsdale, Jr.
- Airworthiness certificate: Standard, Normal
- Last inspection: AAIP, May 9, 1983, 15 hours before
- Departed: HYA, HYANNIS, MA
- Destination: BOS, BOSTON
- Flight plan: IFR
- Airport: runway 4, 10,001 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 26; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 3,767 total, 556 in this make and model, 2,319 as pilot in command, 243 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Night/dark
- Wind: 50° at 4 knots
- Temperature: 52 °F, dew point 43 °F
- Observed at: BOS, 11 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Incident 19830513029029I](https://openairdocs.org/incident/19830513029029I), May 13, 1983: Cessna 402CESSNA, Boston, MA. Rolled inverted on ILS approach after encountering wake turbulence from an air bus A300. Was able to recover.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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