# NTSB DEN86IA026: North American NA-265-40, N1909D, Denver, CO, November 22, 1985

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: November 21, 1985, 19:44 local (Nov 22, 1985, 02:44 UTC)
- Place: Denver, CO
- Coordinates: 39.759635, -104.87059 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.7596&lon=-104.8706&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 5 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16863
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN86IA026
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16863/pdf
- Page: https://openairdocs.org/ntsb/DEN86IA026

## Analysis

AFTER TO FROM A SNOW COVERED RW, THE LG DWN AND LOCKED LIGHTS IN THE COCKPIT REMAINED ILLUMINATED ON LG RETRACT THE CREW DID NOT RECOGNIZE THIS AS A LOG GEAR INO SYS MALFUNCTION NOR WERE THEY FAMILIAR WITH THE CORRECT PROC TO LOWER LG WHEN THIS MALFUNCTION OCCURS. THEY ATTEMPTED TO LWR LG FOR LOG AT DEN WITH LG HANDLE WHICH RESULTED IN NOSE LG EXTENSION ONLY. THE CORRECT PROCEEDURE OF PULLING THE EMER T HANDLE WAS USED DURING THE GO-AROUND FOLLOWING THE MISHAP.SUBSEQUENT LOG WAS MADE WITH-OUT INCIDENT.

## Sequence of events

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

- Airframe/component/system failure/malfunction, takeoff - initial climb
  - airport facilities,runway/landing area condition - snow covered (contributing factor)
  - weather condition - icing conditions (contributing factor)
  - landing gear,gear indicating system - false indication (contributing factor)
- In flight collision with terrain/water, landing - flare/touchdown
  - gear extension - not obtained, pilot in command (cause)
  - landing gear,main gear - false indication (contributing factor)
  - wheels up landing - inadvertent, pilot in command (cause)

## Aircraft

- Registration: [N1909D](https://openairdocs.org/deregistered/N1909D-1997-07-31), registration cancelled 1997-07-31, S/N 28257 (OpenAirDocs)
- Reported make and model: NORTH AMERICAN NA-265-40
- Registry model: [North American NA-265-40](https://openairdocs.org/model/north-american-na-265-40) (registry code 6402608) (OpenAirDocs)
- Category: Airplane
- Serial number: 282-57
- Airframe hours: 6403
- Engines: P&W JT12A-8 3300 lbs thrust turbo jet
- Damage: Minor damage
- Flight: Part 135
- Operator: Mayo Aviaiton Inc
- Registered owner: P & S Partners
- Airworthiness certificate: Standard, Transport
- Last inspection: Continuous airworthiness, July 27, 1985, 46 hours before
- Departed: BZN, BOSEMAN, MT
- Destination: DEN, DENVER, CO
- Flight plan: IFR
- Airport: DEN, Denver, runway 26, 10,010 × 150 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 56; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 9,700 total, 1,600 in this make and model, 9,000 as pilot in command, 106 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 270° at 3 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 16 °F, dew point 7 °F
- Altimeter: 29.00 inHg
- Observed at: DEN

## 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 19851121068749I](https://openairdocs.org/incident/19851121068749I), Nov 21, 1985: Rkwell NA26540, Denver, CO, Minor damage. Touched down briefly with mains retracted and went around. Ice on downlock switches. T handle extension not used.

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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