Beech BE99 incident near Oakland, California, February 24, 1998
On February 24, 1998 at about 7:41 pm local time, a Beech BE99, registered N20FW, was involved in an incident near Oakland, California. It was a flight of an unrecorded kind under charter and air-taxi rules (Part 135). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
Water accumulation in the tail section of the aircraft that froze around the elevator control cables which restricted the movement of the elevator. Contributing factors were the accumulation of debris in the limbers and drain hole for the affected area. A finding was the fact that this area cannot be easily inspected by the pilot due to the need for hand tools to gain visual access.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- February 24, 1998 · about 7:41 pm local time
- Place
- Oakland, California · map
- Type
- Incident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Beech BE99
- Registration
- N20FW · registry record · serial U-111
- Damage
- Not recorded
- Flight
- Flight of an unrecorded kind · charter and air-taxi rules (Part 135)
The NTSB's narrative final · quoted from the NTSB record
The aircraft encountered elevator control problems while en route and landed safely at his destination. During a post-landing inspection, ice formation was found in the tail section of the aircraft in an area surrounding the elevator control cables. The water drain hole and limbers that evacuate this area were found clogged with fuzz-like fibers.
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: airline transport pilot, flight instructor
- Ratings: multi-engine land; single-engine land; instructor: airplane multi-engine; instructor: airplane single-engine; instructor: instrument airplane; instrument: airplane
- Flight time: 5,000 hours in all; 300 in this make and model
- Medical certificate: Class 1 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Last inspection: inspection type not recorded
- Maximum gross weight: 12,500 lb
- Seats: 17
- Landing gear: retractable
- Engine: U/A Canada PT6 SER 578HP (turboprop); 0 hours total
- Operator: Ameriflight, INC.
The flight
- Departed from: BUR Burbank CA at 7:00 pm
- Destination: OAK Oakland CA
- Flight plan: IFR
- Runway 0
Weather at the time
- Light: daylight
- Visibility: 20 statute miles
- Sky: scat at 4,000 ft
- Temperature: 16°F (-9°C), dew point 0°F (-18°C)
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.
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.