The formal technical verification and return-to-service division of the handbook. Maintenance is not considered complete merely because a repair has been physically finished — this division is the bridge that carries a completed repair through testing, verification, restoration and final inspection before it is authorized to return to service.
Core rule: no AGL asset shall be returned to service following maintenance until the applicable testing, functional verification, restoration and final inspection requirements have been satisfied. Not every activity requires every test in this division — selection depends on the equipment, the defect, the work performed, and the applicable approved requirements.
Every post-maintenance activity in this division follows the same underlying sequence, from the moment physical work ends to the moment the asset is formally closed out.
A planning aid only — the actual tests required are determined by the applicable approved maintenance/test procedure and the work performed.
| Maintenance Activity | Electrical Test | Functional Test | Photometry | Restoration |
|---|---|---|---|---|
| Fixture replacement | ✓ | ✓ | Where required | ✓ |
| LED / module replacement | Where applicable | ✓ | Where required | ✓ |
| Connector replacement | ✓ | ✓ | — | ✓ |
| Cable repair | ✓ | ✓ | — | ✓ |
| Cable-joint repair | ✓ | ✓ | — | ✓ |
| Transformer replacement | ✓ | ✓ | — | ✓ |
| CCR maintenance | ✓ | ✓ | — | ✓ |
| PAPI maintenance | ✓ where applicable | ✓ | ✓ where required | ✓ |
| Sign maintenance | ✓ where applicable | ✓ | Where applicable | ✓ |
| ALCMS maintenance | ✓ where applicable | ✓ | — | ✓ |
| Base-can / civil work | Where applicable | ✓ | Where required | ✓ |
Four requirement groups must be closed out before the responsible authorized person can formally confirm return to service.
Grouped by test category — click any topic to expand its verification activities and acceptance condition.
Applies: following work that may affect cable or electrical insulation integrity; compare result against the applicable requirement and, where useful, previous results.
Record: actual measured results — not simply marking the test as completed.
Any failed result shall be investigated and corrected before applicable return-to-service authorization.
Applies: where maintenance affects the earthing system, or where required by the applicable maintenance / test procedure.
Select: the applicable cable test according to the cable system and approved test procedure.
Follow: the applicable approved transformer test procedure for the exact tests required.
Where required: complete the applicable optical / photometric verification.
Standard: the alarm should correctly identify the applicable equipment / system condition.
Record: equipment, location, date, instrument, measurement results, applicable acceptance criteria, result, report reference.
Standard: the work area should be left in the required operational condition.
Action: replace damaged or missing identification where required.
Scope: appropriate to the maintenance activity performed.
Authority: the responsible authorized person formally confirms return to service per the airport's approved system.
The complete Division 23 process, from the moment maintenance work is physically finished to the moment the record is closed.
Repair or replacement work is physically finished.
Insulation, continuity, earth, cable, transformer, connector and CCR tests as applicable.
Fixture, circuit, control and alarm operation confirmed.
Where required by the equipment or maintenance performed.
Work area, FOD, pits, pavement, cable route and identification restored.
Equipment, electrical, operational and area checks completed.
Responsible authorized person formally confirms restoration.
Maintenance record, test records and asset history completed.
Quick answers about post-maintenance testing & restoration, based on the topics in this division.
It is the formal technical verification and return-to-service division. Maintenance is not complete merely because a repair is physically finished; this division carries a completed repair through testing, verification and restoration to formal return to service.
Division 23 (Post-Maintenance Testing & Restoration) contains 33 topics in four groups: Group A Electrical Testing (8 topics), Group B Functional Testing (12 topics), Group C Photometry (4 topics) and Group D Restoration (9 topics).
Not until the applicable testing, functional verification, restoration and final inspection requirements have been satisfied. Not every activity requires every test, and the actual tests required are determined by the applicable approved maintenance and test procedure and the work performed.
Maintenance, Testing, Verification, Restoration, Final Inspection, Return to Service and Closure, across four areas: electrical testing, functional testing, photometry and restoration.
A planning aid that maps each maintenance activity, such as fixture replacement, LED or module replacement, connector replacement, cable or joint repair, transformer replacement, CCR, PAPI, sign and ALCMS maintenance, and base-can or civil work, to the electrical test, functional test, photometry and restoration that may apply. The actual tests are set by the approved procedure and the work performed.
Four requirement groups. Testing complete means electrical, functional and any required photometric or optical checks are satisfactory and compared against acceptance criteria. Restoration complete means the work area is restored and FOD removed, pit covers, pavement and cable route are restored, markers reinstated and identification restored. Final inspection means equipment, electrical and operational checks are complete, there is no exposed electrical hazard, earthing and bonding are restored and the area is safe. Documentation and authorization means required documentation is complete, operational coordination is satisfied, the responsible authorized person confirms return to service, and the maintenance and test records are attached.
Eight steps: maintenance completed, electrical testing, functional testing, photometric verification where required, area restoration, final inspection, return to service confirmed by the responsible authorized person, and documentation closure of the maintenance record, test records and asset history.
Post-maintenance testing and restoration is more than reconnecting power and walking away.
Build the technical knowledge to understand functional verification, photometric confirmation, and the sign-off sequence that proves an asset is genuinely fit to return to service.
Verify the fix. Confirm restoration. Sign off with confidence.
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