2. Everything I will say and all information included in this
presentation is either cited material from other sources or my
personal opinion and may or may not reflect any of the
organisations I am associated with.

3. The regulatory requirements and industry standards (Part M, Part 21 & IOSA)
Reliability Data Sharing – Can it be replicated in other disciplines?
MONITORING REPLACEMENT OF
PARTS & COMPONENTS
OPERATOR’s RELIABILITY
PROGRAMME
TO DISSEMINATE INFORMATION
ABOUT RECURRENT FAILURES
TC/STC holders’ responsibilities
& programmes
TRADITIONAL AIRCRAFT TYPES
DATA COLLECTED MANUALLY
NEW TECHNOLOGY (ON-BOARD
HEALTH MONITORING SYSTEMS)
vs

4. 21.A.3A Failures, malfunctions and defects
(a) System for Collection, Investigation and Analysis of Data
The holder of a TC, RTC, STC, ETSO holder shall have a system for
collecting, investigating and analysing reports of and
information related to failures, malfunctions, defects or other
occurrences which cause or might cause adverse effects on the
continuing airworthiness of the product, part or appliance
covered by the TC, RTC, STC, ETSO authorisation.
Information about this system shall be made available to all
known operators of the product, part or appliance and, on
request, to any person authorised under other associated
implementing Regulations.

5. 21.A.3A Failures, malfunctions and defects
(b) Reporting to the Agency
1. The holder of a TC, RTC, STC, ETSO authorisation shall report to
the Agency any failure, malfunction, defect or other occurrence
of which it is aware related to a product, part, or appliance
covered by the TC, RTC, STC, ETSO authorisation, and which has
resulted in or may result in an unsafe condition.
2. These reports shall be made in a form and manner established
by the Agency, as soon as practicable and in any case dispatched
not later than 72 hours after the identification of the possible
unsafe condition, unless exceptional circumstances prevent this.

6. AMC M.A.202 (a) Occurrence reporting
Accountable persons or organisations should ensure that the type certificate
(TC) holder receives adequate reports of occurrences for that aircraft type, to
enable it to issue appropriate service instructions and recommendations to
all owners or operators. Liaison with the TC holder is recommended to
establish whether published or proposed service information will resolve the
problem or to obtain a solution to a particular problem. An approved
continuing airworthiness management or maintenance organisation should
assign responsibility for co-ordinating action on airworthiness occurrences
and for initiating any necessary further investigation and follow-up activity
to a suitably qualified person with clearly defined authority and status.
In respect of maintenance, reporting a condition that could seriously hazard
the aircraft is normally limited to:
• serious cracks, permanent deformation, burning or serious corrosion of
structure found during scheduled maintenance of the aircraft or component.
• failure of any emergency system during scheduled testing.

7. 2.12 Reporting to the Authority
MNT 2.12.1 The Operator shall have a procedure to provide the Authority, for aircraft
over 5,700 (12,566 lb) kg maximum certificated takeoff mass, with in-service
information as prescribed by the Authority.
Guidance
Guidance may be found in ICAO Annex 8, Part II, 4.2.4.
Each Contracting State shall establish, in respect of aeroplanes over 5 700 kg and
helicopters over 3 175 kg maximum certificated take-off mass, the type of service
information that is to be reported to its airworthiness authority by operators,
organizations responsible for type design and maintenance organizations. Procedures
for reporting this information shall also be established.
MNT 2.12.2 The Operator shall have a procedure for reporting to the Authority and, if
applicable, the Type Certificate Holder, defects or un-airworthy conditions in
accordance with requirements contained in Table 4.4.
MNT 2.12.3 – 2.12.6 (Intentionally open)
MNT 2.12.7 The Operator shall have a procedure to transmit to the Type Certificate
Holder information on faults, malfunctions, defects and other occurrences which could
affect the continuing airworthiness of aircraft of over 5,700 kg (12,566 lb) maximum
certificated takeoff mass.

8. • RELIABILITY: The probability that
an item will perform a required
function, under stated conditions,
for a stated period of time.
AVAILABILITY
SAFETY
• Important aspect of System Safety
Assessment for Certification. i.e. CS 25.1309
• From commercial / operational point of view, it is
absolutely crucial for AVAILABILITY.

9. Source: ARP 4754 - Guidelines for development of civil aircraft systems

10. Source: Reliability, Maintainability & Risk, David J. Smith, 2001

11. Generator
• Design (Inherent)
• Production
standards
• Installation
• Component +
System
Reliability
• Preventive +
Predictive
Maintenance
Trailing Edge Flaps
• Design
(Redundancy)
• Components
• Operation (Usage)

12. Source: VIVACE 1.6/3/EADS-CRC-F/T/05018-2.0 Report on Aircraft Maintenance Programme 2005
Reliability
Program

16. http://www.flightglobal.com/articles/2009/04/28/325753/turkish-737-altimeter-fault-occurred-on-several-flights-prior-to.html
CASE STUDY – REPETITIVE DEFECTS
MANAGING RELIABILITY & RISK

17. Source: http://www.readigroup.org/background.html

18. Source: http://www.spec2000.com/10.html

19. Source: http://www.spec2000.com/44.html

20. Source: http://www.boeing.com/commercial/aeromagazine/articles/qtr_1_08/AERO_Q108.pdf
Source:http://www.ataebiz.org/forum/2010_ata_ebiz_forum/Reliability_Yakubowsky_2010.pdf

22. TRADITIONAL AIRCRAFT TYPES
DATA COLLECTED MANUALLY
NEW TECHNOLOGY (ON-BOARD
HEALTH MONITORING SYSTEMS)
vs

23. Reliability Data Analysis - Data Mining/Machine Learning
The goal of this
research is to develop
and implement a
statistically based
alerting system for
reliability events, for
mature aircraft
programs, allowing an
easier identification of
problems by analysing
the historical in-service
event data.

24. CAN SOME OF THE RELIABILITY DATA ANALYSIS
& SHARING PRACTICES BE REPLICATED FOR
FLIGHT SAFETY OR FDM DATA?