# NTSB NYC84IA002: Beech C99, N96AV, Burlington, VT, October 6, 1983

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: October 6, 1983, 14:20 local (18:20 UTC)
- Place: Burlington, VT
- Location: 44.4720° N, 73.1533° W: Placed by OpenAirDocs at PATRICK LEAHY BURLINGTON INTL (BTV), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.4720&lon=-73.1533&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 10 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 35435
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC84IA002
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/35435/pdf
- Page: https://openairdocs.org/ntsb/NYC84IA002

## Sequence of events

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

- Main gear collapsed, landing - flare/touchdown
  - landing gear,normal retraction/extension assembly - failure,total (cause)
  - landing gear,normal retraction/extension assembly - undetermined (cause)
  - landing gear,normal retraction/extension assembly - separation (cause)
  - landing gear,gear locking mechanism - disabled (cause)

## Analysis

THE PLT STATED THAT AFTER A SMOOTH TOUCHDOWN ON THE MAIN GEAR, A LOUD BANG WAS HEARD, ACCOMPANIED WITH A GEAR UNSAFE HORN. A GO-AROUND WAS MADE, & AFTER COMPLETING EMERG GEAR EXTENSION PROCEDURE THE ACFT RETURNED FOR LANDING. DURING LANDING THE LEFT GEAR FOLDED. A COMPANY PLT WHO WAS HOLDING SHORT AT THE APCH END OF THE RWY STATED HE OBSERVED THE ACFTGEAR HIT THE ARRESTING CABLE DURING TOUCHDOWN. HOWEVER, THE TOWER CONTROLLER ALSO OBSERVED THE LANDING & STATED THAT THEACFT TOUCHED DOWN 700 FT BEYOND THE THRESHOLD, A POINT 1/2 WAY BETWEEN THE THRESHOLD & ARRESTING GEAR. THE LEFT GEAR GAVE WAY AT TOUCHDOWN & THE PLT OPTED TO GO AROUND. THE ACFT PASSED OVER THE CABLE WITH THE GEAR EXTENDED. SEVERAL PASSENGERS DESCRIBED THE LANDING AS HARD. EXAM OF ARRESTING GEAR SYSTEM DID NOT DISCLOSE ANY DAMAGE. THE LEFT MAIN GEAR DRAG LEG (P/N50-120202) CONNECTED TO SUPPORT (P/N50-120201) WAS SEPARATED. THE SUPPORT IS RETAINED TO ACFT BY RIVETS & FOUR 1/4 INCH BOLTS. THE RIVETS WERE SHEARED & THE FOUR BOLTS WERE MISSING.

## Aircraft

- Registration: [N96AV](https://openairdocs.org/aircraft/N96AV), registered now, S/N U-201, built 1983 (OpenAirDocs)
- Reported make and model: BEECH C99
- Registry model: [Beech C-99](https://openairdocs.org/model/beech-c-99) (registry code 1154006) (OpenAirDocs)
- Registry engine: [Pratt & Whitney Canada PT6A-60A](https://openairdocs.org/engine/pratt-whitney-canada-pt6a-60a) (registry code 52043, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: U-201
- Airframe hours: 968
- Engines: P&W PT6A-36 715 horsepower turbo prop
- Damage: Minor damage
- Flight: Part 135
- Operator: Air Vermont
- Registered owner: Beech Acceptance Corp., Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: AAIP, October 1, 1983, 28 hours before
- Departed: JFK, JAMAICA, NY
- Flight plan: IFR
- Airport: BTV, Burlington Intl, runway 33, 7,870 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; airline transport; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 5,100 total, 400 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 230° at 16 knots, gusting 24
- Visibility: 30 statute miles
- Lowest ceiling: 4,500 ft broken
- Temperature: 61 °F, dew point 46 °F
- Altimeter: 29.00 inHg
- Observed at: BTV

## 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 19831006072149I](https://openairdocs.org/incident/19831006072149I), Oct 6, 1983: Beech C99, Burlington, VT, Minor damage. Left main gear began to collapse on landing. Went around. Unable to correct. Drag leg separated from structure.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.