2. Aircraft Engineering
Aircraft Maintenance Objective
SAFETY RELIABILITY
PROFITABILITY
MINIMUM COST
TO MAINTAIN THE AIRCRAFT'S INHERENT
LEVEL OF SAFETY AND RELIABILITY AT
THE MINIMUM COST TO ACHIEVE
POSITIVE PROFITABILITY.
5. Aircraft Engineering
Generic Maintenance Program
Generic Program is
Made for most operators.
Can be implemented instantly (pre-approved).
Gives no advantage for low-mid utilization.
7. Aircraft Engineering
Tactics Used For Program Enhancement
• Escalation of
Scheduled
Check Intervals.
Existing
Sup Sup Sup
“C”
“D”
• Integrating of
Supplement into
Existing Tasks.
9. Aircraft Engineering
Control Elements
Fleet average utilization.
Reliability and aircraft incidents reports.
Unscheduled component removals.
Schedule interruptions.
Non-routine events.
Other Operator experience (Benchmarking)
10. Aircraft Engineering
Evaluate MP
Project Flowchart
yes
No
No
No
yes
yesyes
No
Improvable? CMP Proposal Discuss with ENG CMP Int.
feasible?
GACA
acceptance
Work plan
agreement
Data
Gathering
Official FR
Final
CMP
feasible?
Generate
MSD generate E.J.R.
Maintain Existing MP
E.J.R.
accepted?
Review each item
Update TIS
GACA approval
CMP
implementation
11. Aircraft Engineering
Analysis of Control Elements
Should show no evidence that would prevent
the customized program extended /
adjusted intervals in the System, Structural
and Zonal tasks.
13. Aircraft Engineering
0 1 2 3 4 5 6 7 8
Generic Program IntervalsCustomized Program Intervals
SVA B747-400 Project
• “C” check escalated from 18 months to 24 months.
“C” “C” “C” “C”“D”
• “D” check escalated from 6 years to 8 years.
14. Aircraft Engineering
SVA B747-400 Project
Maintenance cost reduced by 23%
Out Of Service time reduced by 21%
Fleet availability increased by 31 days/year
Approximate total saving is $2.25 M / year.
18. Aircraft Engineering
SSID BACK GROUND CONT.
Supplemental Programs are mandatory
requirements for continuous Airworthiness
of aged fleets that operate beyond their
own Design Service Objective (DSO).
A300-600 beyond 30,000 F/C ALI
B747 beyond 20,000 F/C SSID
19. Aircraft Engineering
SSID INTEGRATION METHODOLOGY
SSID
MSD
ZONE INTRVL
INSP.
METHOD
Defined Variable
Defined N/A
PROGRAM DTR
Variable
DefinedDefined
Defined
30. Aircraft Engineering
Conclusions
• Published programs are generic.
• C.M.P’s are tailored for a specific customer.
• C.M.P must be approved.
• Analysis of Control Elements is essential.
31. Aircraft Engineering
C.M.P requirements must be met.
C.M.P’s are economical.
SVA creates and implements C.M.P’s for
other fleet types.
Conclusions (Cont.)
32. Aircraft Engineering
Supplemental Requirements are mandatory
for aged fleets.
SVA is the 1st B747-Clasic operator to
integrate SSID in the world.
SSID integration is VERY economical.
Conclusions (Cont.)