The landing gear is a complex area to review largely due that the entire landing gear assembly has its own maintenance requirements as defined by the manufacturer and commonly contains some LLP’s (Life Limited Parts).
It is often easier to consider the Landing Gear as the Hard Time Component (HT) and the Parts that make up the Landing gear in many cases are Life Limited Parts (LLP).
The maintenance requirements include overhauls in which the landing gear must be removed from the aircraft and sent to shop for them to be overhauled. This process alone is very expensive and time consuming.
The cost of a landing gear itself as a component is vast and so a review of the complete landing gear records is of paramount importance and depending on the age of an aircraft and the duration of a lease the landing gear may or may not be the original installed. You should have the certification for the landing gear installed; a EASA Form 1 and / or an FAA 8130-3.
Listed below is a typical checklist for a Landing Gear review;
Landing Gear Hours and Cycles Certified Statement
Certified list of AD’s and method of compliance
Dirty Finger Print (DFP) folder for all applied AD’s embodied
Certified list of SB’s and method of compliance
DFP folder for all applied SB’s embodied
Landing Gear MOD/STC Review
DFP folder for all applied STC/MOD’s
Landing Gear safe life item (SLI) known as LLP (life limited part) Listing.
LLP (life limited part) Review
Delivery Documentation
Landing Gear Shop Visit (SV) Report
NIAS Non-Incident or Accident Report
On-Condition Condition Monitoring (OCCM) and Airworthiness
Deviation Status from OEM (Concessions)
Landing Gear Service Letters & associated DFP file
Certified Log Card or equivalent
Delivery report stating AD/SB status
Assembly Tree for Each Gear
Last Shop Report from Overhaul
Field Repair Rework Details
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