# NTSB ATL84FA031: Embraer EMB110-P1, N764, Blountville, TN, October 29, 1983

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Field investigation · Final report
- Date: October 28, 1983, 21:29 local (Oct 29, 1983, 01:29 UTC)
- Place: Blountville, TN
- Coordinates: 36.530277, -82.319839 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.5303&lon=-82.3198&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 16 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 6230
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL84FA031
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/6230/pdf
- Page: https://openairdocs.org/ntsb/ATL84FA031

## Sequence of events

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

- Airframe/component/system failure/malfunction, approach - vfr pattern - final approach
  - landing gear,gear indicating system - binding(mechanical) (contributing factor)
  - checklist - not followed, pilot in command (cause)
  - anxiety/apprehension, pilot in command (cause)
  - landing gear,gear indicating system - false indication (contributing factor)
  - judgment - poor, pilot in command (cause)
  - emotional reaction, pilot in command (cause)
- Complete gear collapsed, landing - flare/touchdown
  - wheels up landing - performed, pilot in command (cause)

## Analysis

THE ACFT WAS LANDED WITH THE LANDING GEAR UP. POST ACCIDENT TESTS OF THE LANDING GEAR EXTENSION SYSTEM SHOWED THAT ALL OPERATIONS WERE NORMAL EXCEPT FOR THE MAIN GEAR DOWN-LOCK INDICATIONS. WHEN THE CREW LOWERED THE GEAR FOR LANDING THE NOSE GEAR AND RIGHT MAIN WERE CONFIRMED DOWN BUT THE CAPTAIN SAID THAT HIS VISUAL INSPECTION FROM THE COCKPIT REVEALED THAT THE LEFT MAIN GEAR DID NOT EXTEND. THERE IS NO INDICATION THAT A FLY-BY FOR A TOWER CHECK WAS DONE OR THAT THE MIG LIGHT IN THE WHEEL WELL WAS USED FOR BETTER NIGHT VISION. THE CREW SAID THE ACFT MANUAL WAS USED FOR ADDITIONAL PROCEDURES TO LOWER THE GEAR. WHEN THE FUEL REMAINING REACHED 100 LBS PER SIDE A DECISION WAS MADE TO LAND WITH THE GEARUP. POST ACCIDENT INSPECTION REVEALED THE LEFT MAIN GEAR LOCK PISTON WAS BINDING THUS PREVENTING A DOWN AND LOCKED INDICATION IN THE COCKPIT.

## Aircraft

- Registration: N764 (not matched to a registry record)
- Reported make and model: EMBRAER EMB110-P1
- Category: Airplane
- Serial number: 110411
- Airframe hours: 2937
- Engines: P&W PT6A-34 783 horsepower turbo prop
- Damage: Substantial damage
- Fire: On-Ground
- Flight: Part 135
- Operator: Atlantic Southeast Airlines
- Registered owner: Basil Aircraft Services Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: Continuous airworthiness, October 27, 1983, 4 hours before
- Departed: ATL, ATLANTA, GA
- Flight plan: IFR
- Airport: TRI, Tri-City, runway 22, 6,600 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 25; airline transport; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 6,000 total, 2,200 in this make and model, 7 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: calm
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 48 °F, dew point 34 °F
- Altimeter: 30.00 inHg
- Observed at: TRI

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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