Record primary identification and operational context for this emergency replacement. All fields marked mandatory must be completed prior to component removal.
Aircraft Tail Number/Registration
Aircraft Type/Model
Airport/Station Code
Exact Location (Gate, Hangar, Bay)
Fault Detection Date/Time (UTC)
Replacement Start Date/Time (UTC)
Technician Performing Replacement
Assisting Technician(s)
Maintenance Type Classification
Line Maintenance (A-Check Equivalent)
Unscheduled Defect Rectification
ETOPS Pre-Departure Verification
RVSM Critical Area
MNPS/Nav Equipment
Other
Specify other maintenance classification:
Does this replacement require special dispatch deviation?
Specify MEL/CDL reference and conditions:
Reference Work Order/Task Card Number
Aircraft Technical Logbook Reference
Weather Conditions (if applicable to fault)
Comprehensive documentation of the removed component and detailed failure analysis. Provide specific diagnostic evidence to support replacement necessity.
Part Number (P/N) of Removed Component
Serial Number (S/N) of Removed Component
ATA Chapter Reference
Nomenclature/Description
Position/Location on Aircraft
Failure Symptoms Observed (select all applicable)
Complete unit failure/No power
Intermittent operation
Erratic output values
Self-test failure (BITE)
Communication bus error
Overheating indication
Physical damage/Corrosion
Out-of-tolerance parameter
False warning annunciation
Display malfunction
Audio quality degradation
Other
Detailed Fault Description & Sequence of Events
Fault Code/BITE Message
Fault Detection Method
Flight Crew Report
Central Maintenance System (CMS)
Built-In Test Equipment (BITE)
Ground Test Equipment
Visual Inspection
Scheduled Maintenance Check
Other
Was the fault intermittent or easily reproducible?
Describe intermittent fault pattern, frequency, and conditions:
Describe steps to consistently reproduce the fault:
Troubleshooting Time Spent (minutes)
Troubleshooting Steps Performed & Results
Did you perform LRU swapping to isolate the fault?
Specify swap location and confirmation that fault followed the LRU:
Failure Criticality Assessment
No Safety Impact
Minor Operational Impact
Major Operational Impact
Dispatch Critical (MEL A-Item)
Dispatch Critical (MEL B-Item)
Safety Critical (Non-Dispatch)
Other
Did the failure trigger any master warning/caution?
Specify warning message and level:
Probable Cause Assessment
Upload photograph(s) of removed component showing any physical damage or condition
Upload diagnostic data file (BITE report, test results, etc.)
Complete traceability and certification verification for the replacement component. Ensure all airworthiness requirements are satisfied before installation.
Part Number (P/N) of Replacement Component
Serial Number (S/N) of Replacement Component
Batch/Lot Number (if applicable)
Manufacturer Name
Manufacture Date (if available)
Is the replacement component new or serviceable used?
Provide serviceable tag reference and previous installation history:
Airworthiness Certification Type
FAA Form 8130-3 (Authorized Release Certificate)
EASA Form 1 (Airworthiness Approval Tag)
CAAC Certificate
Manufacturer C of C (Certificate of Conformance)
Serviceable Tag (Internal)
Repair Station Release
Other
Certificate/Tag Number
Certificate/Tag Date
Is the component life-limited or time-controlled?
Life Limit Data
Limit Type | Current Value | Limit Value | Remaining | ||
|---|---|---|---|---|---|
A | B | C | D | ||
1 | Flight Hours (FH) | 12500 | 25000 | 12500 | |
2 | Flight Cycles (FC) | 4500 | 15000 | 10500 | |
3 | Calendar Days | 180 | 365 | 185 | |
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Does the replacement have any open modifications or service bulletins incorporated?
List modification numbers and SB references:
Was the replacement part stored in controlled conditions?
Describe storage conditions and any concerns:
Storage Location/Bin Number
Upload photograph of replacement component condition prior to installation
Upload airworthiness certificate/serviceable tag
Detailed verification that the replacement component functions correctly and that all associated systems are properly calibrated. Document all test parameters and results.
Was a pre-installation bench check performed on the replacement component?
Bench check results and reference:
Installation Verification Steps Completed
Ground Test Procedure Results
Test Procedure Reference | Test Description | Test Equipment Used | Equipment Calibration Due Date | Passed | Notes/Observations | ||
|---|---|---|---|---|---|---|---|
A | B | C | D | E | F | ||
1 | AMM 34-12-00-740-801 | Air Data Computer BITE Test | Portable Data Loader P/N 990X-LOAD | 2025-09-15 | Yes | All BITE tests passed, no faults | |
2 | AMM 22-11-00-740-802 | Autopilot System Test | Test Box P/N 1234-TEST | 2025-08-20 | Yes | All channels responded normally | |
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Did any test procedure fail or show marginal results?
Describe failure, corrective action taken, and retest results:
System Recalibration Required?
No recalibration needed
Automatic recalibration completed
Manual recalibration performed
Recalibration deferred to next base check
Other
Describe manual recalibration procedure and results:
Justify deferral and specify scheduling requirements:
Specify recalibration details:
Is an operational check flight required before release?
Specify flight test requirements and restrictions:
Were any associated systems or components disturbed during replacement?
List affected systems and any re-verification performed:
Post-Installation System Integration Check
Upload photograph(s) of installed replacement component
Upload complete ground test report/data sheet
Final verification and airworthiness release certification. All approvals must be completed before aircraft can be returned to service.
Has the technician completed all required training and qualifications for this replacement?
Specify supervising qualified technician:
Technician's Final Declaration
Technician Digital Signature
Technician Sign-off Timestamp
Maintenance Control Lead Name
Does the Maintenance Control Lead concur with the fault diagnosis and replacement necessity?
Specify concerns and required actions:
Maintenance Control Lead Approval Signature
Maintenance Control Approval Timestamp
Quality Inspector Name
Quality Inspector Verified All Documentation Complete?
List documentation deficiencies:
Quality Inspector Witnessed Critical Steps?
Specify witnessed steps and findings:
Quality Inspector Independent Observations
Quality Inspector Approval Signature
Quality Inspector Approval Timestamp
Is the aircraft cleared for return to service?
Specify restrictions and remaining actions required:
Final Release Reference Number
To configure an element, select it on the form.