M 10.7 Applicable National & International Requirements Flashcards
M10.7 Applicable National and International Requirements
M10.7 Applicable National and International Requirements
- Maintenance Program, Maintenance Checks and Inspections
- Airworthiness Directives
- Service Bulletins
- Manufacturer’s Service Information
- Modification and Repairs
- Maintenance Documentation
- Maintenance Manuals
- MMEL / MEL and Dispatch Deviation Lists
- Continuing Airworthiness
- Minimum Equipment Requirements - Test Flights
- ETOPS
- All Weather Operations
Maintenance Program, Maintenance Checks and Inspections
- What is Maintenance?
Maintenance Program, Maintenance Checks and Inspections
How is this Aircraft Maintenance Program structured?
Maintenance Program, Maintenance Checks and Inspections
A Check:
A Check
An A Check is performed approximately every 400-600 FH. It is usually performed in a hanger for a minimum of 10 hours. However, the actual occurrence of this check varies by aircraft type, the FC/FH since the last check. The occurrence can be delayed by the airline if certain predetermined conditions are met.
Maintenance Program, Maintenance Checks and Inspections
B Check:
B Check
This is performed approximately every 6-8 months, and is usually completed within 1-3 days at an airport hangar. A similar occurrence schedule applies to the B Check as to the A check. However , B checks are increasingly incorporated into successive A checks. i.e Check A-1 through A-10 complete all the B check items.
Maintenance Program, Maintenance Checks and Inspections
C Check:
C Check
- This is performed approximately every 20-24 months or a specific number of actual FH or as defined by the manufacturer. This maintenance check is much more extensive than a B Check, requiring a large majority of the aircraft’s components to be inspected.
- This check puts the aircraft out of service, and the aircraft must not leave the maintenance site until is completed. It also requires more space, therefore, usually carried out in a hangar at a maintenance base. The time needed to complete such a check is at least 1-2 weeks.
Maintenance Program, Maintenance Checks and Inspections
3C Check:
3C Check
Some authorities use a type of check, known as 3C Check or Intermediate Layover (IL), which typically includes light structural maintenance, including checks for corrosion, or on specific high load parts of the airframe. It may also be used as the opportunity for cabin upgrades ( new seats, IFE and carpeting) which would otherwise put the aircraft out of service for a significant time without the need for an inspection. As component reliability has improved, some MROs now spread the workload across several C Checks.
Maintenance Program, Maintenance Checks and Inspections
D Check:
D Check
- The D Check, sometimes known as a “heavy maintenance visit” is the most comprehensive check for an airplane. This check occurs approximately every 6-10 years. It is a check that takes the entire airplane apart for inspection and overhaul, possibly even the pain may need to be completely removed for further inspection on the fuselage metal skin. Such a check can generally take up to 2 months to complete, depending on the aircraft and the amount of man power available. It also requires the most space of all maintenance checks, and as such must be performed at a suitable maintenance base. It is by far the most expensive check, going into the million dollar range.
- Often, older aircraft being phased out of a particular airline’s fleet are either stored or scrapped upon reached their next D Check, since its more cost effective.
Maintenance Program, Maintenance Checks and Inspections
- A transport aircraft operator…
- The MPD …
- A transport aircraft operator is responsible for his maintenance program and has to get it approved by his civil aviation authority. This program is derived from the maintenance program of the aircraft manufacturer which is the MPD (Maintenance Planning Document)
- The MPD of the manufacturer is the synthesis of 3 different sources:
- The MRB (Maintenance Review Board) principal process
- The certification regulation of the aircraft type and its operational demands
- The follow up of the aircraft operation and the feedback from experience which leads to additionally specific tasks to maintain the airworthiness of the aircraft.
The creating of the most suitable maintenance program
MSG 2 ; Process orientated approach
MSG 2
- Hard Time (HT) Failure Preventive Process
MSG 2
- On-Condition (OC) Failure Preventive Process
MSG 2
- Condition Monitoring (CM) Not a Failure Preventive Process
MSG 3:
MSG 3 ; Task orientated approach
- Airframe Systems Tasks
MSG 3 ; Task orientated approach
- Structural Item Tasks
MSG 3 ; Task orientated approach
- Zonal Inspection Tasks
Maintenance Intervals
- Various maintenance checks defined in the MSG 3 Process are considered standard:
- Transit Checks
- 24/48 Hour Checks
- Hourly Limit Checks
- Operating Cycle Limit Checks
- Letter Checks
Maintaining Effectivity, Efficiency and Reliability of the Maintenance Program
AD - Airworthiness Directives
SB - Service Bulletins
Manufacturer’s Service Information
Modification and Repairs
Part 21 Subpart M - Repairs
Maintenance Documentation
Maintenance Manuals
- Brief Overview of Manuals:
Brief Overview of Manuals:
- Manuals are formal documentation which gives out valuable information which range from the way maintenance task can be carried out on an aircraft to how the aircraft can be flown to even the procedures to follow during certain situations.
- Certain manuals are most frequently used during maintenance. It is an important fact to note that these manuals may vary from aircraft to aircraft. Therefore customization of these manuals is vital before use.
Maintenance Manuals
Issuance of a CRS
- All maintenance work carried out must be documented and copies retained of all CRSs issued to maintain traceability. Detailed maintenance record copies must be retained for 3 years from date of release of aircraft or component. Records shall be retained in a safe environment with regard for fire, flood and theft. Computer backup discs and tapes shall be stored in different locations to the working disc/tapes to ensure at least one good copy will survive should there be fire/flood/theft.
- To perform the maintenance, the operator must possess and make permanently available the aircraft manufacturer’s approved maintenance data. These maintenance data will include the manuals specified and other documents such as ADs, SBs, Reliability Programs and more.
- CRS is a criteria that is outlined in Part M.A.801
MMEL, MEL & DDG
Continuing Airworthiness
Minimum Equipment Requirements : Test Flights
Test Flight
Test Flight
- “Airworthy Check Flight” after initial production to see if airworthy as per design requirements
- “Maintenance Check Flight” after specific maintenance tasks
- “Periodic Check Flight” owner’s request
ETOPS
Objectives of ETOPS
ETOPS Keywords:
ETOPS: Maintenance and Dispatch Requirements
Component Control
ETOPS Proving Flight
ETOPS in Modern Day Aircrafts
The success of ETOPS operations, the safety benefits associated with ETOPS-led designs, and the large economic benefits provided to ETOPS Operators have had a powerful effect on the design of all modern twin jets. Thanks to ETOPS Operations, it is now economically feasible to build very large twin jets. These new aircraft, like the Airbus A330 and A350 XWB, have even better safety features, and higher operating performances than comparable tris and quads. In addition, these new aircrafts have a better range than previous generations and can operate on Polar Routes and Routes in some remote areas of the southern hemisphere. In fact these new aircraft have been the driving force behind the new “Beyond 180 Minute” Rule.
All Weather Operations
AWO
Low Visibility Operations - General Operating Rules OPS 1.440
AWO
Records
The operator should keep suitable records ( both the operators own records and access to records of any applicable contract maintenance organization). This is to ensure that both the operator and authority can determine the appropriate airworthiness configuration and status of each aircraft intended for Cat II or III operation.
AWO
Configuration Control / System Modifications
The operator should ensure that any modifications to systems and components approved for low visibility operations are not adversely affected when incorporating software charges, SBs, Hardware auditions or modifications
Extracts of Requirements for Operations of AWOPS
- The Airport
Extracts of Requirements for Operations of AWOPS
- Maintenance
Cat II/III Operations
Category II Operations
Cat II/III Operations
Category III Operations
Cat II/III Operations
Facts:
