Piper PA-31-350 accident near Hayden, Colorado, October 28, 1998
On October 28, 1998 at about 3:58 pm local time, a Piper PA-31-350, registered N35533, was destroyed in an accident near Hayden, Colorado. It was a flight of an unrecorded kind under charter and air-taxi rules (Part 135). 1 person was killed. The weather was instrument conditions (cloud, fog or low visibility).
The NTSB's probable cause their words, unchanged
The pilot not following instrument procedures and subsequently descended to minimums prematurely. Factors were the mountainous terrain and the falling snow.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- October 28, 1998 · about 3:58 pm local time
- Place
- Hayden, Colorado · map
- Type
- Accident
- Injuries
- 1 person was killed.
- Weather
- instrument conditions (cloud, fog or low visibility)
- Aircraft
- Piper PA-31-350 · all PA-31-350s on the register
- Registration
- N35533 · no longer on the register · serial 31-8052047
- Damage
- Destroyed
- Flight
- Flight of an unrecorded kind · charter and air-taxi rules (Part 135)
The NTSB's narrative final · quoted from the NTSB record
The Part 135 cargo flight was approaching its destination on an IFR flight plan. The pilot had requested the ILS-DME approach to runway 10, but 2 minutes later, he changed his request to the VOR-B approach to runway 28. ARTCC cleared him for the approach to the non-towered airport. The pilot contacted the airport's Unicom, and requested that the ramp personnel be standing by with fuel and oxygen. The airplane was found 5.8 nm from the approach end of runway 28, at 7,900 feet. The approach minimums for the VOR-B was 7,900 feet, which the pilot could descend to at 8.7 nm. The VOR was located 285 degrees at 13.6 nm from the accident site, and the ILS-DME transmitter was located 285 degrees at 5.6 nm from the accident site. The airplane was equipped with a single DME display head, and it had a Nav 1/Nav 2 selector switch.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
Pilot
- Certificate: commercial pilot
- Ratings: multi-engine land; single-engine land; instructor: airplane single-engine; instructor: instrument airplane; instrument: airplane
- Flight time: 1,800 hours in all; 375 in this make and model
- Medical certificate: Class 2 (valid medical--no waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 12,411 hours
- Last inspection: 100-hour inspection, October 9, 1998
- Maximum gross weight: 7,000 lb
- Seats: 2
- Landing gear: retractable
- Engine: Lycoming TIO-540-J2BD (piston); 0 hours total
The flight
- Departed from: COS Colorado Sprgs CO at 2:51 pm
- Destination: HDN CO
- Flight plan: IFR
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 280° at 11 knots
- Visibility: 5 statute miles
- Sky: overcast at 1,800 ft; ovct at 1,800 ft
- Temperature: 37°F (3°C), dew point 36°F (2°C)
- Altimeter: 30.00 inHg
- Observation at 3:56 pm from HDN, 7 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
Other NTSB records under N35533 the same tail number, which may have belonged to a different aircraft at the time
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.