# NTSB DEN93LA020: Beech 58, N21BW, Ft Collins, CO, December 31, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: December 30, 1992, 20:15 local (Dec 31, 1992, 03:15 UTC)
- Place: Ft Collins, CO
- Coordinates: 40.549411, -105.060127 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.5494&lon=-105.0601&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 29, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18268
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN93LA020
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18268/pdf
- Page: https://openairdocs.org/ntsb/DEN93LA020

## Probable cause

FAILURE BY THE PILOT TO FOLLOW IFR PROCEDURES IN NOT EXECUTING A MISSED APPROACH WHEN HE ARRIVED AT THE RUNWAY THRESHOLD WITH IMPROPER ALIGNMENT AND IMPROPER DESCENT RATE FOR LANDING.  A FACTOR WAS:  MARGINAL WEATHER CONDITIONS.

## Sequence of events

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

- Hard landing, landing
  - terrain condition - runway
  - weather condition - fog (contributing factor)
  - ifr procedure - not followed, pilot in command (cause)
  - proper alignment - not attained, pilot in command
  - proper descent rate - not maintained, pilot in command
  - missed approach - not performed, pilot in command (cause)
- Gear collapsed, landing - flare/touchdown
  - landing gear - overload

## Analysis

WHILE CONDUCTING AN ILS APPROACH IN MARGINAL WEATHER CONDITIONS, THE AIRCRAFT CROSSED THE THRESHOLD DISPLACED TO THE LEFT OF CENTERLINE.  THE PILOT CONTINUED THE APPROACH AND LANDED HARD APPROXIMATELY 3000 FEET FROM THE RUNWAY THRESHOLD ON THE LEFT EDGE OF THE RUNWAY.  THE RIGHT MAIN LANDING GEAR COLLAPSED AND THE RIGHT PROPELLER CONTACTED THE RUNWAY. THE AIRCRAFT DEPARTED THE LEFT EDGE OF THE RUNWAY, AND COLLAPSED THE REMAINING LANDING GEAR.  AFTER SLIDING APPROXIMATELY 1,000 FEET, THE AIRCRAFT REENTERED THE CONFINES OF THE RUNWAY AND SLID TO A STOP.

## Aircraft

- Registration: [N21BW](https://openairdocs.org/deregistered/N21BW-2013-04-10), registration cancelled 2013-04-10, S/N TH-36, built 1970 (OpenAirDocs)
- Reported make and model: BEECH 58
- Registry model: [Beech 58](https://openairdocs.org/model/beech-58) (registry code 1152740) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: TH-36
- Airframe hours: 3608
- Engines: CONTINENTAL IO-520-C 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Positioning, Part 91
- Operator: Northern Colorado Air Charter, doing business as Ncac
- Registered owner: Northern Colorado Air Charter
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, November 5, 1992, 16 hours before
- Departed: AIA, ALLIANCE, NE
- Flight plan: IFR
- Airport: FNL, Ft. Collins/Loveland, runway 33, 8,500 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 1,769 total, 242 in this make and model, 1,692 as pilot in command, 19 in the last 90 days, 18 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Night/dark
- Wind: 140° at 5 knots
- Lowest ceiling: 100 ft broken
- Temperature: 18 °F, dew point 14 °F
- Altimeter: 30.00 inHg
- Observed at: FNL, 1 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).

- [Accident 19921230051959A](https://openairdocs.org/incident/19921230051959A), Dec 30, 1992: Beech 58, Fort Collins, CO, Substantial damage. Left of runway on ILS approach. Attempted landing not aligned. Collapsed gear. LOC showed incorrect center line.

## Other investigations on N21BW (1)

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.

- [NTSB MIA77DKJ66](https://openairdocs.org/ntsb/MIA77DKJ66), Aug 5, 1977: Beech 58 (N21BW), Centerville, AL, substantial damage

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.