Heavy maintenance occurring every 4,000–6,000 flight hours or every 2–3 years; involves deep structural inspections and extensive functional tests.
The most comprehensive "heavy" check, occurring every 9–12 years, where the aircraft is often stripped down for structural integrity verification. How the Manual is Used in "Work" Scenarios
The is the foundational technical resource for all ground-based maintenance activities, providing standardized procedures to ensure the continued airworthiness of this Next Generation (NG) narrow-body jet. Purpose and Structure of the AMM boeing 737800 maintenance manual pdf work
Covers fluid replenishment (oil, hydraulic, fuel) and ground handling.
Outlines required inspection intervals, including A, B, C, and D checks. Purpose and Structure of the AMM Covers fluid
Details maintenance for the fuselage (53), nacelles (54), stabilizers (55), and wings (57).
Conducted approximately every 500 flight hours; focus on detailed visual inspections and minor systems testing. Conducted approximately every 500 flight hours; focus on
Dedicated specifically to the CFM56-7 engines used on the 737-800. Maintenance Check Cycles
Performed every 24–48 hours; includes walkarounds, fluid level checks (oil/hydraulics), and emergency equipment inspection.