# NTSB FTW95LA316: Gulfstream GV-1, N480UP, Englewood, CO, July 24, 1995

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 24, 1995, 13:36 local (19:36 UTC)
- Place: Englewood, CO
- Location: 39.5701° N, 104.8493° W: Placed by OpenAirDocs at CENTENNIAL (APA), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.5701&lon=-104.8493&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 9 uninjured
- Status: Completed, report December 19, 1995
- Report: Approved by Office Director
- NTSB case key (mKey): 19513
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW95LA316
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/19513/pdf
- Page: https://openairdocs.org/ntsb/FTW95LA316

## Probable cause

FAILURE OF THE LEFT MAIN LANDING GEAR STRUT ATTACHMENT FOR UNDETERMINED REASONS.

## Sequence of events

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

- Airframe/component/system failure/malfunction, landing - roll
  - landing gear,main gear strut - disconnected (cause)
  - reason for occurrence undetermined

## Analysis

DURING LANDING ROLL/TAXI, FOLLOWING A NORMAL FLIGHT AND LANDING, THE LEFT MAIN LANDING GEAR STRUT DISCONNECTED AND THE STRUT PENETRATED THE LANDING GEAR FAIRING BOX.

## Factual narrative

On July 24, 1995, at 1336 mountain daylight time, a Gulfstream Aerospace GV-1, N480UP, sustained substantial damage on landing at Centennial Airport, Englewood, Colorado, when part of the left main landing gear penetrated the wing during landing/taxi.  The two crew members and seven passengers were not injured.  Visual meteorological conditions prevailed and an IFR flight plan was filed for this business flight which originated in Allentown, Pennsylvania (PA).

According to the crew, the flight from Allentown, PA to their destination was uneventful.  They were given a visual approach to runway 33 at Centennial Airport and the landing and taxi appeared normal; however, they noted a slight list to the left during taxi.  The aircraft was parked at the AMR Combs passenger facility and the passengers disembarked normally.  During post flight, the crew found damage to the left main landing gear assembly.  Items incurring damage were the tires, shock strut, cables/wiring, left gear fairing box, and door fairing.  It was found that the left shock strut had penetrated the gear fairing box aft of the gear well.

The left strut and right knuckle and pins were tested at the facilities of Applied Technical Services, Incorporated, Marietta, Georgia.  Their report is attached and states that the most likely failure scenario is that the through bolt loosened and the pin fell out allowing the strut to move abnormal to its design function.  The left knuckle and pins were not recovered.

A copy of the Applied Technical Services report was forwarded to the Board's Materials Laboratory for review.  The review concurred with the report.

## Aircraft

- Registration: N480UP (not matched to a registry record)
- Reported make and model: Gulfstream GV-1
- Category: Airplane
- Serial number: 1054
- Airframe hours: 3380
- Engines: Rolls-Royce TAY 611-8 14000 lbs thrust turbo jet
- Damage: Substantial damage
- Flight: Business, Part 91
- Registered owner: Union Pacific Aviation, Co.
- Airworthiness certificate: Standard, Transport
- Last inspection: Continuous airworthiness, March 31, 1995, 194 hours before
- Departed: ABE, ALLENTOWN, PA
- Destination: APA
- Flight plan: IFR
- Airport: APA, Centennial Airport, runway 33, 10,002 × 101 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 54; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 9,967 total, 1,185 in this make and model, 4,850 as pilot in command, 87 in the last 90 days, 30 in the last 30 days, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 5 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 82 °F, dew point 39 °F
- Altimeter: 30.00 inHg
- Observed at: APA, 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 19950724048879A](https://openairdocs.org/incident/19950724048879A), Jul 24, 1995: Englewood, CO, Substantial damage. (-16) On July 24, 1995, at 1336 MDT, a Gulfstream aerospace G-1V, N480UP, sustained substantial damage on landing at centennial airport, Englewood, Colorado,…

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.