# NTSB WPR25LA273: Gulfstream Aerospace G-V, N820MS, Portland, OR, September 2, 2025

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Class 3 · Limited · Preliminary report
- Date: September 2, 2025, 12:45 local (19:45 UTC)
- Place: Portland, OR · Airport
- Coordinates: 45.588709, -122.59686
- Nearby events: https://openairdocs.org/map.md?lat=45.5887&lon=-122.5969&mi=10
- Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Defining event: [Standing-engine(s) start-up: Landing gear collapse](https://openairdocs.org/ntsb-events/094)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Investigation ongoing
- Investigation class: Class 3
- NTSB office: Western Pacific Region
- Parties: FAA, Gulfstream Aerospace
- NTSB case key (mKey): 200936
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR25LA273
- NTSB preliminary report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/200936/pdf
- Page: https://openairdocs.org/ntsb/WPR25LA273

## Preliminary report

On September 2, 2025, about 1245 Pacific daylight time, a Gulfstream Aerospace G-V, N820MS, was substantially damaged when it was involved in an accident near Portland, Oregon. The pilot, co-pilot and passenger were not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The flight crew reported that, after landing at the Portland International Airport (PDX), Portland, Oregon, the airplane was taxied to a fixed-based operator to disembark two passengers and refuel the airplane. A passenger boarded the airplane, and the flight crew conducted a preflight of the airplane and prepared the airplane to depart. The pilot noted that after the no. 2 engine was started, there was a low indication from the hydraulic oil pressure gage. He activated the power transfer unit (PTU), and upon activation of the PTU, the nose landing gear retracted, and the forward fuselage impacted the ground. The forward pressure bulkhead sustained substantial damage. The flight crew conducted an emergency engine shut down and all occupants of the airplane exited the airplane through the aft baggage door. The airplane was secured for further examination.

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Standing-engine(s) start-up: Landing gear collapse](https://openairdocs.org/ntsb-events/094) (defining event); cases with it: [Gulfstream Aerospace G-V, 2 cases](https://openairdocs.org/ntsb-events/094/sequence.md?model=3980116), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md)

## Aircraft

- Registration: [N820MS](https://openairdocs.org/aircraft/N820MS), registered now, S/N 626, built 2000 (OpenAirDocs)
- Reported make and model: GULFSTREAM AEROSPACE G-V
- Registry model: [Gulfstream Aerospace G-V](https://openairdocs.org/model/gulfstream-aerospace-g-v) (registry code 3980116) (OpenAirDocs)
- Registry engine: [BMW Rolls BR-700 series](https://openairdocs.org/engine/bmw-rolls-br-700-series) (registry code 09500, turbo-fan) (OpenAirDocs)
- Category: Airplane
- Serial number: 626
- Year built: 2000
- Damage: Minor damage
- Flight: Personal, Part 91
- Operator: Speedero LLC
- Registered owner: Speedero LLC
- Airworthiness certificate: Standard, Transport
- Destination: HND, Las Vegas, NV
- Flight plan: IFR
- Airport: PDX, Portland Intl
- Equipment: ADS-B

## Weather

- Conditions: Visual (VMC), Day
- Wind: 290° at 6 knots
- Visibility: 10 statute miles
- Lowest ceiling: 12,000 ft broken
- Temperature: 75 °F, dew point 59 °F
- Altimeter: 29.99 inHg
- Observed at: KPDX, 1 nm away
- METAR: KPDX 021953Z 29006KT 10SM BKN120 BKN250 24/15 A2999 RMK AO2 SLP153 FU BKN120 T02440150

## 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 20250902011939A](https://openairdocs.org/incident/20250902011939A), Sep 2, 2025: Gulfstream Aerospace G-V, Portland, OR, Substantial damage. At approximately 1300 PST on 09/02/2025 on the [privacy data omitted]service ramp, [privacy data omitted] a Gulfstream G-V, sn 626, after starting the #2…

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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