ERA09IA115 · Cessna 402C
Friendship Airways Cessna 402C · Incident: system/component malfunction/failure (non-power) during landing
From Palm Beach County Glades Airport (PHK) to Fort Lauderdale Hollywood International Airport (FLL)
Event
- NTSB case
- ERA09IA115
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Incident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Cessna 402C
- Aircraft type
- Cessna 402
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N522FA
- Operator
- Friendship Airways
- Onboard fatalities
- Unknown
- Route
- From Palm Beach County Glades Airport (PHK), Pahokee, FLTo Fort Lauderdale Hollywood International Airport (FLL), Fort Lauderdale, FL
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Landing · landing roll
- Defining eventThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- System/component malfunction/failure (non-power)
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Minor
Cause areas
- Aircraft › Aircraft handling/service
- Aircraft › Aircraft systems
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
During landing an undetected fatigue crack in the barrel of the left main landing gear upper barrel and trunnion assembly, which penetrated to approximately 70 percent of the wall thickness, resulted in complete fracture of the upper barrel and subsequent separation of left main gear assembly. The airplane departed the left side of the runway and came to rest on the grass. The fatigue origin was on the outer diameter surface, and propagated radially inward with little or no circumferential propagation. The fracture was located in a transition zone of the barrel where the radius did not meet the specification. Additionally, measurements of the inside and outside diameters of the barrel revealed out of tolerance dimensions. The barrel material, heat treatment, and hardness were consistent with the specifications for the part, while the surface finish was less than the specified value. An area of the barrel immediately beneath the fracture surface exhibited smooth areas with corrosion pits. Moderate corrosion was also noted at the upper edge of the side brace collar following paint removal by chemical and mechanical means. The only inspection of the barrel specified by the airplane manufacture is a visual inspection checking for corrosion, pitting, and cleanliness. No other inspection requirements are stipulated for the fracture area of the upper barrel and trunnion assembly. The last visual inspection was performed approximately 58 flight hours before the incident. The Safety Board has investigated 2 previous accidents in which the upper barrel and trunnion assembly fractured. In both previous cases, the barrel fractured above the side brace collar.
Probable cause
The airplane manufacturer's inadequate inspection procedure resulting in undetected fatigue cracking of the main landing gear barrel of the upper barrel and trunnion assembly.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ERA09IA115
- Event ID
- 20081231X15122
- Case number
- ERA09IA115
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: e7ccfc2610f31b6beb5ae21f04be3718089f6f884a1973ccccf109c5d1ae4fdb; retrieved 2026-09-15T10:39:10.393Z.