# NTSB DEN84LA104: Gates Learjet 25D, Denver, CO, March 3, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 3, 1984, 13:45 local (20:45 UTC)
- Place: Denver, CO
- Coordinates: 39.740001, -104.860893 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.7400&lon=-104.8609&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 5 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16347
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN84LA104
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16347/pdf
- Page: https://openairdocs.org/ntsb/DEN84LA104

## Sequence of events

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

- Hard landing, landing - flare/touchdown
  - level off - improper, pilot in command (cause)

## Analysis

ABOUT 1 MI FROM THE ARPT WHILE ESTABLISHED ON THE GLIDE SLOPE, THE PLT WAS ADVISED BY THE CONTROLLER TO GO AROUND DUE TOTRAFFIC ON THE GROUND. JUST AFTER THE PLT ADVANCED THE THROTTLES & RETRACTED THE LANDING GEAR, THE CONTROLLER AGAIN CLEARED THE PLT FOR LANDING SINCE THE TRAFFIC ON THE GROUND HAD CLEARED THE RWY. THE PLT STATED HE IMMEDIATELY 'CHOPPED'THE THROTTLES & EXTENDED THE GEAR. THE ACFT LANDED HARD ON THE RWY ABOUT 1500 FT FROM THE THRESHOLD. BUCKLING & WRINKLING OF THE FUSELAGE SKIN WAS EVIDENT JUST FORWARD OF EACH ENG. EXTENSIVE EXTERNAL BUCKLING COULD BE SEEN IN THE AREA OF THE RIGHT LANDING GEAR.

## Aircraft

- Registration: XALAP (not matched to a registry record)
- Reported make and model: GATES LEARJET 25D
- Category: Airplane
- Serial number: 366
- Airframe hours: 605
- Engines: GE 610-8A 2950 lbs thrust turbo fan
- Damage: Substantial damage
- Flight: Part 91
- Airworthiness certificate: Standard, Normal
- Last inspection: Continuous airworthiness, January 20, 1984, 565 hours before
- Departed: SAT, SAN ANTONIO, TX
- Flight plan: IFR
- Airport: DEN, Stapleton Intl, runway 35R, 12,000 × 200 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 26; commercial; airplane ratings: multi-engine land; instrument ratings: airplane; medical: unknown, valid medical--no waivers/lim.; seat: left; flight hours: 2,020 total, 28 in this make and model, 32 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 30° at 10 knots
- Visibility: 15 statute miles
- Lowest ceiling: 25,000 ft overcast
- Temperature: 39 °F, dew point 19 °F
- Altimeter: 29.00 inHg

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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