Aero Commander 690A N115AB
30 May 2008 · Tacoma, Washington, United States · No injuries
Summary
On 30 May 2008 at about 18:00 local time, a Aero Commander 690A registered N115AB, operated by Thomas D Klemans, was involved in an accident near Tacoma, Washington, United States. 2 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 18:00
- Classification
- Accident
- Location
- Tacoma, Washington, United States
- Nearest airport
- Tacoma Narrows (TIW)
- Coordinates
- 47.2678, -122.5781
- Aircraft
- Aero Commander 690A
- Registration
- N115AB
- Category
- Airplane
- Engines
- 2
- Operator
- Thomas D Klemans
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Personal
- Phase of flight
- Not recorded
- Route
- Tacoma → Tacoma
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- SEA08LA147
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 2 | 0 | 0 | 0 | 2 |
Probable cause
The collapse of the right main landing gear for undetermined reasons.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
After landing and during the roll out the right main landing gear collapsed. An examination of the landing gear revealed that the right main landing gear inboard clevis, which serves as the connection between the inboard hydraulic actuating cylinder to the main landing gear body, had failed. A metallurgical examination of the clevis fracture region revealed that it had failed in overstress. No preexisting cracks or corrosion were noted at the fracture and the laboratory could not determine an underlying reason for the overstress fracture. The main landing gear is retained in the down and locked position by hydraulic pressure being applied to the inboard main landing gear actuating cylinder, as well as being assisted by the outboard main landing gear (hydraulic-pneumatic) actuating cylinder. Additionally, bungee cords attached to the main landing gear drag braces assures that the main landing gear is locked and retained in the down position. As a result of these redundant features that are designed to ensure that the main landing gear is locked in the down position, the gear collapse cannot be positively attributed to the failure of the clevis. During a post accident examination of the right main landing gear a replacement clevis was installed and multiple landing gear extension and retraction cycles were performed. The landing gear system, including the proper sequencing of all components, operated correctly and no anomalies were noted. The reason for the landing gear collapse was undetermined.
Quoted verbatim from the NTSB record.
Other Aero Commander 690 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 21 Oct 2009 | Aero Commander 690 | Cedar City, Utah, United States | Kolob Canyons Air Services L L C | No injuries | - |
| 29 Jul 2006 | Aero Commander 690A | Anchorage, Alaska, United States | - | Fatal | 3 |
| 15 Oct 2006 | Aero Commander 690A | Antlers, Oklahoma, United States | - | Fatal | 4 |
| 4 Jan 2005 | Aero Commander 690A | Cleveland, Ohio, United States | - | No injuries | - |
| 16 Sep 2003 | Aero Commander 690 | Soto La Marina, Mexico | MGS Corporation | Fatal | 1 |
| 3 Mar 2003 | Aero Commander 690A | Tracy, California, United States | - | Serious injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 17 Jun 2008 | Cessna T182T | Point Roberts, Washington, United States | David A. Smith | No injuries | - |
| 9 May 2008 | Thorp T-18 | Kent, Washington, United States | Roger Thompson | Fatal | 1 |
| 8 Jul 2008 | Evektor-Aerotechnik SPORTSTAR | Arlington, Washington, United States | Northwest Aviation Center | No injuries | - |
| 10 Oct 2008 | Bell 206B | Cougar, Washington, United States | Northwest Helicopters | Serious injuries | - |
| 27 Jul 2008 | Cessna 172N | McMurray, Washington, United States | Brenda Lee Houston | Fatal | 3 |
| 13 Jan 2008 | Piper PA-12 | Centerville, Washington, United States | Dwayne A. Hansen | Minor injuries | - |