Maintenance Optimization Made Simple Brian McLoughlin – Boeing Richard Lewis - Ryanair

Most Airlines Are Not Operating at Previous 737NG Maintenance Planning Data (MPD) Document Example: 737NG Operators 13% of At / Beyond Previous MPD 87% Below

Why Do Operators Remain Below MPD Limits? Unique Data Requirements Guidelines require Operators perform analysis of their own operational experience and data Utilization Factors Unique Customer operating profiles can result in FH, FC and calendar based tasks not aligning for packaging purposes Maintenance Packaging Fall-Out Tasks Many Operators package check visits to meet the least common denominator of the individual tasks within the package An optimization allows Operators to realize the full potential value of the maintenance program through customized analysis of their maintenance data

Requirements for Implementing MRB/MPD Updates Once an MRBR/MPD has been incorporated into an operator’s program, the Airline Maintenance Program must be adjusted based on the airline’s actual in-service experience Excerpt from FAA AC 121-22C Implementing the MRBR/MPD Changes once an airline has operating experience …Do not confuse the MRBR (MPD) requirements with an operator maintenance program. After FAA approval, the requirements become a base or framework around which each operator can develop its own individual aircraft maintenance program Excerpt from FAA AC 120-16F on Aircraft Maintenance Programs … regulations (§§ 121.373 and 135.431) that require you to establish and maintain a system for the CASS of the performance and effectiveness of your maintenance program. Excerpt from FAA AC 120-79A on Continuing Analysis and Surveillance System (CASS) … The maintenance schedule should be task-based and appropriately modified in accordance with the CASS data collection and analysis findings. Excerpt from EASA Annex I – Part M - Subpart C - M.A. 302 Aircraft Maintenance Programme - (g) … The aircraft maintenance programme shall be subject to periodic reviews and amended accordingly when necessary. These reviews shall ensure that the programme continues to be valid in light of the operating experience … Excerpt from IATA Operator Task Interval Adjustment/Optimization Guidelines … As service experience is accumulated, scheduled maintenance requirement intervals should be adjusted / optimized to reflect the results of actual in-service experience.

Boeing Optimized Maintenance Program Optimization at individual task level Customized analysis of each individual task interval Based on operator’s maintenance data and operational goals Based on operator’s unique environment and utilization Benefits of the Optimized Maintenance Program Efficient and effective maintenance program Creates additional revenue operation days Reduces labor and material requirements Supports safety and reliability through establishing effective intervals for each maintenance task Boeing has the tools and capability to maximize maintenance program effectiveness

Statistical Application Probability Assessment Comprehensive Data Driven Results Statistical Application Probability Assessment OEM Engineering Severity Assessment Operator Data + + Airline Operational Data Task Intent / Mapping OEM Design/Cert. MSG-3 Failure effect Current Task Procedure Scheduled Maintenance Log Book Component Removal Delay & Cancellation Shop records Maintenance Cost Data Processing Mining Categorization Customized Results Statistical Analysis Engine OEM Backed OMP Optimized intervals Regulatory Support

Optimal Scheduled Maintenance Intervals System Degradation Effective Interval Significant Finding Reduction in functionality or unacceptable operational / economic penalties Significant Finding (System Failure) Opportunity For Preventative Maintenance Minor Finding No immediate functional, operational, or economic impact Minor Defect (Latent Failure) TMF TSF High probability of Unscheduled Maintenance Early inspection - NFF Time Minimize looking too early (NFF) and too late (In-service failures, unscheduled maintenance)

Boeing OMP Customers OMPs for Cathay Pacific, Ryanair, Virgin Atlantic and Virgin Australia and most reapat requst for additional support. GOL, Ethiopian and Volotea are engaged with maintenance operations consulting services.. All within the last 18 months

OMP: Strong Track Record of Delivering Value Customer Achieved Savings ($/yr) Reg. Appr. Customer A (737NG) $8.5M total Yes Customer B (777) $50.6M Customer C (747-400) $2.4M Customer D (737NG) $27.5M Customer E (737NG) $11.2M Customer F (737NG) $4.6M Customer G (777) $24.3M In Work Customer H (777) Customer I (737NG) $5.4M Customer J (737NG)

For more information Please contact: Brian McLoughlin Optimized Maintenance Programs Boeing Professional Services brian.m.mcloughlin2@boeing.com