Saturday, December 30, 2017

Cessna 210J Centurion, N222AT, registered to Siera 1 Tech Inc and operated by the pilot: Accident occurred December 29, 2017 at San Bernardino International Airport (KSBD), California

The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity: 

Federal Aviation Administration / Flight Standards District Office; Riverside, California

Aviation Accident Factual Report - National Transportation Safety Board:

Investigation Docket - National Transportation Safety Board:

Location: San Bernardino, CA
Accident Number: WPR18LA058
Date & Time: 12/29/2017, 2030 PST
Registration: N222AT
Aircraft: CESSNA 210
Aircraft Damage: Substantial
Defining Event: Landing gear collapse
Injuries: 1 None
Flight Conducted Under: Part 91: General Aviation - Personal 


On December 29, 2017, about 2030 Pacific standard time, a Cessna 210J airplane, N222AT, experienced a left main landing gear collapse during landing at San Bernardino International Airport (SBD) San Bernardino, California. The private pilot was not injured. The airplane sustained substantial damage to the empennage. The airplane was registered to Sierra 1 Tech Inc., San Bernardino, California, and operated by the pilot under the provisions of Title 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed, and no flight plan was filed for the flight, which originated from Chino Airport (CNO), Chino, California, about 1915.

According to the pilot, he picked up the airplane from a maintenance facility to return to his base airport at SBD. Lock actuator seals were on order and he would bring the airplane back when they arrived the following week. When inbound for landing to SBD, the pilot lowered the landing gear and noted that the left main gear was not completely down. The pilot informed the tower controller of the situation. Despite multiple attempts, the pilot was unable to hydraulically or manually extend the landing gear to the down and locked position. During the landing, the left main landing gear collapsed, and the left horizontal stabilizer struck the ground. The airplane subsequently spun left and skidded to a full stop on the runway.

A postaccident examination of the left main landing gear revealed that the saddle assembly (part number 1241423-1) had fractured.

The mechanic at the maintenance facility where the pilot had picked the airplane up from, reported that the airplane was at his facility for two days during the last week of December and that the annual inspection was almost complete except for inspecting the landing gear and fixing some hydraulic system leaks. The mechanic had informed the pilot that new seals needed to be ordered and the annual inspection was placed on hold. The airplane remained on jacks and the access panels were left off. On December 29, around lunch time, the pilot arrived at the maintenance facility and told the mechanic that he needed the airplane that day. The mechanic informed the pilot that the annual inspection was not complete, and he would not be signing the airplane off as airworthy. The mechanic left for lunch, and when he returned, the pilot had re-installed all the removed panels, and down-jacked the airplane. It had been pulled outside and the pilot was attempting to start the engine. When confronted, the pilot was insistent on taking the airplane. The engine was subsequently started, and the pilot taxied out and eventually took off.

The mechanic reported that on January 3, 2018, the pilot arrived at the maintenance facility and asked for the annual inspection to be signed off. The pilot told the mechanic that personnel at SBD airport needed to see proof of an annual inspection signoff prior to him being able to taxi. The pilot stated that as soon as he received the annual inspection signoff he would return the airplane to the mechanics shop, so the annual inspection could be completed. The mechanic complied with the pilot's request and provided the annual signoff dated January 3, 2018, because that was the day the pilot was bringing the airplane back, and that the pilot reported that he had performed landings and checks and found the airplane safe to fly back to his business. It was not until later in the week that the mechanic learned of the accident on December 29.


A review of the airframe maintenance records, revealed that an annual inspection was completed on September 16, 2016, at a total time of 4,550.65 hours. The entry indicated that Airworthiness Directive (AD) 76-14-07 Gear Saddles had been complied with.

A lined piece of paper, separate from the logbooks, was also provided. The page identified three stamped statements. Each statement identified the date of January 3, 2018. No Tach time was identified. The three statements identified the mechanics name and maintenance certificate number, as well as his signature that reported that the "Aircraft", "Engine", and "Propeller" "has been inspected in accordance with an Annual inspection and was determined to be in an airworthy condition at this time." No entries were identified that indicated if AD's had been complied with.


The landing gear saddle assembly was removed from the airplane and sent to the NTSB Materials Laboratory in Washington, D.C. for metallurgical examination. According to the engineer's factual report, the saddle fracture surfaces exhibited features consistent with fatigue.


Amendment 39-5124, dated August 28, 1985, to Airworthiness Directive (AD) 76-14-07 R2 CESSNA, regarding Cessna Models 210 – 210J (Serial numbers 57001 thru 57575, 21057576 thru 21059199), with 1,025 hours' time in service, and each 25 hours subsequent, require inspection of main landing gear saddles, part numbers 1241423-1 and 1241423-2, for cracks using dye penetrant procedures outlined in paragraph E of the AD. Cracked saddles require replacement prior to further flight. The AD further states that within 100 hours time in service after August 16, 1976, or prior to April 1, 1977, whichever occurs later, landing gear saddles are to be replaced with improved saddles of the same part number, in accordance with Cessna Service Letter SE 75-26, dated December 5, 1975. The improved landing gear saddles are to be inspected for cracks at each annual inspection using the dye penetrant procedure.

Examination of the airplane's Airworthiness Directives Compliance Log showed that new landing gear saddles (same part number, 1241423-1 and 1241423-2) were installed on April 1, 1977 at 2,860.7 hours. The last time the AD was complied with was on September 16, 2016 at 4,550.65 hours. According to photos obtained from the FAA, at the time of the accident the airplane had accumulated a total time of 4,808.97 hours. At this time the landing gear saddles had been in service for 1,948.27 hours. 

Pilot Information

Certificate: Private
Age: 45, Male
Airplane Rating(s): Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used: Unknown
Instrument Rating(s): None
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 3 Without Waivers/Limitations
Last FAA Medical Exam: 11/23/2016
Occupational Pilot: No
Last Flight Review or Equivalent: 09/25/2017
Flight Time:  (Estimated) 650 hours (Total, all aircraft), 250 hours (Total, this make and model) 

Aircraft and Owner/Operator Information

Aircraft Make: CESSNA
Registration: N222AT
Model/Series: 210 J
Aircraft Category: Airplane
Year of Manufacture: 1968
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 21059098
Landing Gear Type: Retractable - Tricycle
Seats: 4
Date/Type of Last Inspection: 12/29/2017, Annual
Certified Max Gross Wt.: 3850 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 7120 Hours as of last inspection
Engine Manufacturer: CONT MOTOR
ELT: C126 installed, not activated
Engine Model/Series: IO 520 SERIES
Registered Owner: SIERA 1 TECH INC
Rated Power: 280 hp
Operator: On file
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Night
Observation Facility, Elevation: KSBD, 1159 ft msl
Distance from Accident Site: 1 Nautical Miles
Observation Time: 0350 UTC
Direction from Accident Site: 73°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 4 knots /
Turbulence Type Forecast/Actual: / None
Wind Direction: 4°
Turbulence Severity Forecast/Actual: / N/A
Altimeter Setting: 30.11 inches Hg
Temperature/Dew Point: 15°C / -9°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: CHINO, CA (CNO)
Type of Flight Plan Filed: None
Destination: San Bernardino, CA (SBD)
Type of Clearance: Traffic Advisory
Departure Time: 1915 PST
Type of Airspace: Class D

Airport Information

Runway Surface Type: Concrete
Airport Elevation: 1159 ft
Runway Surface Condition: Dry
Runway Used: 06
IFR Approach: None
Runway Length/Width: 10000 ft / 200 ft
VFR Approach/Landing: Full Stop; Traffic Pattern

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 None
Latitude, Longitude: 34.091667, -117.247778 (est)

SAN BERNARDINO –There was drama in the skies above San Bernardino International Airport on Friday night when a single-engine plane circled the airport with what the pilot reported as a possible landing gear problem.

EMS and San Bernardino County Fire Department crews mobilized in preparation for a worst-case landing, but in the end the pilot of the Cessna 210J landed the plane safely.

The pilot had circled the airport for just over an hour to burn fuel prior to landing, fire officials said.

The pilot was the only person in the plane,  said officials from the fire agency, which had staged an aircraft crash rig and other fire apparatus in preparation for the landing.

Upon landing, the gear did not support the plane’s weight.

“The pilot walked away,” said Mark Gibbs, airport director of aviation.

The gear was not locked in place during the landing, Gibbs said.

The plane did not catch fire.

The incident will be investigated by the FAA, Gibbs said.

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