DOC AIRBUS | AMM A320FTIME LIMITS - MAINTENANCE CHECKS - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
1. General
This chapter includes the following sections:
This chapter includes the following sections:
- 05-20-00: SCHEDULED MAINTENANCE CHECKS
- 05-50-00: UNSCHEDULED MAINTENANCE CHECKS
A. Scheduled Maintenance Checks (05-20-00)
This section includes all the zonal inspections that you must do on the aircraft.
This section includes all the zonal inspections that you must do on the aircraft.
B. Unscheduled Maintenance Checks (05-50-00)
This section includes maintenance checks to be performed whenever a flight in abnormal conditions is reported by the Flight Crew.
This section is divided into two categories of information:
This section includes maintenance checks to be performed whenever a flight in abnormal conditions is reported by the Flight Crew.
This section is divided into two categories of information:
- inspections,
- checks.
2. Time Limits and Maintenance Checks
The approved Airworthiness Limitation Section (ALS) of the Instructions for Continued Airworthiness is made of the following Parts:
ALS Part 1: Safe Life Airworthiness Limitations Items - SL ALI
The ALS Part 1 provides all the mandatory replacement times that are determined as being necessary for compliance with §25.571(c). Such airworthiness limitations are applicable to structures that are designed according to the "safe life" concept.
ALS Part 2: Damage-Tolerant Airworthiness Limitations Items - DT ALI
The ALS Part 2 provides all the structural inspection requirements that are determined as being necessary for compliance with §25.571(b). Such structure airworthiness maintenance requirements are applicable to structures that are designed according to the damage-tolerance/fail-safe concept.
ALS Part 3: Certification Maintenance Requirements - CMR
The CMRs are intended to detect system safety-significant latent failures which would, in combination with one or more other specific failures or events, result in a hazardous or catastrophic failure condition. CMRs are identified further to an evaluation of the tasks necessary to maintain compliance with the system safety certification requirements.
ALS Part 4: System Equipment Maintenance Requirements - SEMR
SEMRs refer to preventative maintenance requirements, including replacement, found necessary to comply with the safety objectives by stabilization of the equipment failure rate.
ALS Part 5: Fuel Airworthiness Limitations - FAL
The FALs are the mandatory maintenance instructions necessary to be in compliance with the Fuel Tank Safety requirements. These requirements are determined as being necessary to preclude the development of unsafe conditions within the fuel system as a result of maintenance actions, repairs or alterations throughout the operational life of the aircraft.
The FALs consist in maintenance/inspection tasks and Critical Design Configuration Control Limitations (CDCCL).
The Airworthiness Limitation Section of the ICA is provided separately and is available on the Airbus World website.
The approved Airworthiness Limitation Section (ALS) of the Instructions for Continued Airworthiness is made of the following Parts:
ALS Part 1: Safe Life Airworthiness Limitations Items - SL ALI
The ALS Part 1 provides all the mandatory replacement times that are determined as being necessary for compliance with §25.571(c). Such airworthiness limitations are applicable to structures that are designed according to the "safe life" concept.
ALS Part 2: Damage-Tolerant Airworthiness Limitations Items - DT ALI
The ALS Part 2 provides all the structural inspection requirements that are determined as being necessary for compliance with §25.571(b). Such structure airworthiness maintenance requirements are applicable to structures that are designed according to the damage-tolerance/fail-safe concept.
ALS Part 3: Certification Maintenance Requirements - CMR
The CMRs are intended to detect system safety-significant latent failures which would, in combination with one or more other specific failures or events, result in a hazardous or catastrophic failure condition. CMRs are identified further to an evaluation of the tasks necessary to maintain compliance with the system safety certification requirements.
ALS Part 4: System Equipment Maintenance Requirements - SEMR
SEMRs refer to preventative maintenance requirements, including replacement, found necessary to comply with the safety objectives by stabilization of the equipment failure rate.
ALS Part 5: Fuel Airworthiness Limitations - FAL
The FALs are the mandatory maintenance instructions necessary to be in compliance with the Fuel Tank Safety requirements. These requirements are determined as being necessary to preclude the development of unsafe conditions within the fuel system as a result of maintenance actions, repairs or alterations throughout the operational life of the aircraft.
The FALs consist in maintenance/inspection tasks and Critical Design Configuration Control Limitations (CDCCL).
The Airworthiness Limitation Section of the ICA is provided separately and is available on the Airbus World website.
A. Instructions for Continued Airworthiness
(1) Maintenance scheduling
The V2500 is designed as an "On-Condition" engine whereby the scheduled inspection tasks are determined through the use of the MSG3 procedure and documented in the Maintenance Review Board Report (MRBR). The MRBR is the basis from which the Approved Maintenance Program, for each operator, will be developed. The Maintenance Planning Document should cover all of the procedures included in the appropriate MRBR, such as:
The V2500 is designed as an "On-Condition" engine whereby the scheduled inspection tasks are determined through the use of the MSG3 procedure and documented in the Maintenance Review Board Report (MRBR). The MRBR is the basis from which the Approved Maintenance Program, for each operator, will be developed. The Maintenance Planning Document should cover all of the procedures included in the appropriate MRBR, such as:
(a) External engine/powerplant inspections.
(b) Boroscope inspections.
(c) Magnetic chip detector inspections.
(d) Filter inspections and replacements.
(e) Assessment and correction of class III Centralised Fault Display System (CFDS) faults.
(f) When a defect is detected which requires engine removal, the Operator will be expected to rectify the identified defect and to review the total engine for any appropriate preventive maintenance action that will ensure its continued airworthiness.
(2) Trend Monitoring
It is recommended that operators have a trend monitoring program in addition to the above activity. The program should be set up to provide information split into scheduled tasks to ensure the airworthiness of the engine. Elements of this program should include the monitoring of the following parameters or other data acceptable to the relevant Authority:
It is recommended that operators have a trend monitoring program in addition to the above activity. The program should be set up to provide information split into scheduled tasks to ensure the airworthiness of the engine. Elements of this program should include the monitoring of the following parameters or other data acceptable to the relevant Authority:
(a) Exhaust Gas Temperature (EGT).
(b) Shaft rotational speeds (N1 and N2).
(c) Fuel flow.
(d) Vibration.