B787 Maintenance Manual Top Page

The Boeing 787 Aircraft Maintenance Manual (AMM) provides specialized, data-driven procedures for the Dreamliner's composite-heavy design, incorporating structural, planning, and fault-isolation documents. The system enables significantly longer maintenance intervals and reduced costs compared to older aircraft, supported by advanced digital integration for technicians. For further technical details, visit FlightGlobal. FAA approves Boeing 787 maintenance program

Key Sections and Procedures

4. Lithium-Ion Battery Systems

The B787 was the first large commercial aircraft to utilize Lithium-Ion (Li-Ion) batteries for its APU and Main Battery systems. Following the fleet grounding in 2013, the battery containment system and charging logic were redesigned. b787 maintenance manual top

• Variable Frequency (VF) Generators: Four primary generators produce variable frequency AC power (360–800 Hz). Technicians must understand that motor speed varies with engine speed, requiring different diagnostic approaches than constant-speed drives (CSD).
• Auto-Transformer Rectifier Units (ATRU): These convert AC to HVDC (±270 VDC). Maintenance "Top" checks involve monitoring the cooling fans and ensuring the integrity of the heavy-duty busbars to prevent arcing.

ATA 42 (Integrated Modular Avionics): This covers the "brains" of the aircraft, detailing how various systems share computing resources. 4. Why Accuracy Matters: The High Cost of Errors The Boeing 787 Aircraft Maintenance Manual (AMM) provides

Maintenance for the Dreamliner is primarily scheduled based on the Maintenance Planning Document (MPD) , which groups tasks into light and base checks. Aircraft Commerce 1. Composite Airframe Maintenance The 787 airframe is approximately 52% composite by weight ATA 42 (Integrated Modular Avionics): This covers the

• Step 1: Visually inspect for "swelling" (a battery that grew >3mm).
• Step 2: Measure voltage differential between cells (must be <0.03V).
• Step 3: Perform a "capacity test" (charge, discharge, recharge—takes 8 hours).
• Step 4: If any cell is "lazy," replace the entire $150,000 battery box.

Composite Repair: Over 50% of the 787 is made of carbon fiber reinforced plastic (CFRP), requiring specialized Quick Composite Repair (QCR) kits for structural maintenance. Top Maintenance Manual Documents

1. Maintenance personnel receive regular training: Maintenance personnel should receive regular training on the use of the manual and the maintenance procedures outlined in it.
2. The manual be regularly updated: The manual should be regularly updated to reflect changes in the aircraft's systems and components, as well as changes in regulatory requirements.
3. The manual be easily accessible: The manual should be easily accessible to maintenance personnel, either in electronic or print form.