Challenger 604: 192-Month Landing Gear Inspection

October 2011

Falcon antenna corrosion

There is some confusion concerning the Chapter 5 requirements for the Landing Gear on the Challenger 604 Aircraft. Some earlier S/N 604s are coming due for the 192 Restoration but may be confused with the 96-month repetitive cycle in the Restoration requirement versus the 96-month Detailed Inspection requirements. This could lead to inaccurate downtime and budgetary figures when scheduling these tasks.

Starting with a new Challenger 604, the landing gear comes due for a 96-monthDetailed Inspection at the first 96-month mark. The detailed inspections are required by Chapter 5 task number 32−00−01−215,  AMTOSS 32−11−00−220−801 for the MLG and Chapter 5 task number 32−00−01−216, AMTOSS 32−21−01−220−802 for the NLG. This inspection is mostly a visual and corrosion inspection that requires only minimal disassembly of the gear.

When the Aircraft hits 192 months the gear comes due for a Restoration. The Restoration is required by Chapter 5 task number 32−00−01−217, AMTOSS 32−11−00−280−801 for the MLG and Chapter 5 task number 32−00−01−218, AMTOSS 32−21−01−280−801 for the NLG. The Restoration is much more in-depth than the 96-month Detailed Inspection and is more comparable to an Overhaul. The Restoration of the gear is then repeated every 96 months after 192 months.

A simpler explanation is that the landing gear is due a Detailed Inspection at the first 96-month mark and is due a Restoration every 96 months after that.

Consult the Maintenance Planning Document as these tasks change from time to time as revisions are released.


Jerry Cable Accessory Tech Rep Astra, Challenger, Citation, Embraer, Falcon, Global, Gulfstream, Hawker, King Air, Learjet, Westwind Lincoln, NE (LNK) +1 402.479.8112

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