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S3C9 - ENGINE GROUND RUNS

Table of Contents

INTRODUCTION

RESPONSIBILITIES

Senior Maintenance Managers

Ground Runner

AUTHORISATION REQUIREMENTS

Installed Aircraft Engines (Fixed Wing)

Installed Aircraft Engines (Rotary Wing)

Auxiliary Power Units

Engines in Test Stands and Facilities (Fixed or Mobile)

AUTHORISATION PROCESS

Authorisation of Ground Run Instructors

Authorisation of Ground Runners

Withdrawal of Authorisation

GROUND RUN CHECKLIST

SAFETY PRECAUTIONS

Fixed Wing Aircraft

Helicopter Rotors Engaged

GROUND RUN SUPERVISION

Ground Running of Installed Aircraft Engines

DOCUMENTATION REQUIREMENTS

Ground Run Authorisation

Ground Run Acceptance

Ground Run Completion

MAINTENANCE FOLLOWING AIRCRAFT ACCEPTANCE

WARNING - AAP 7001.059 TAREG VERSION

WARNING

The procedures in AAP7001.059-TAREG support compliance with AAP7001.053-Technical Airworthiness Regulations, which have been superseded.

Procedures supporting compliance with AAP8000.011-Defence Aviation Safety Regulations are contained in AAP 7001.059-DASR

An organisation’s exposition details which 059 version is applicable

INTRODUCTION

1. Aircraft engine ground runs are carried out when the safe, full or partial correct operation of an aircraft or aeronautical product needs to be proven before being returned to service or cleared for maintenance test flight and are applicable to both fixed wing and rotary wing aircraft. Engine ground runs are performed with aircraft engines installed in the aircraft, a ground test stand or a test facility.

2. The term ‘engines’ includes Auxiliary Power Units (APUs) where they are operated to meet the requirements of paragraph 1. The requirements of this chapter do not apply where APUs are used in lieu of a ground power unit to supply supplemental power, eg environmental control systems air or electrical power, or as part of an operational servicing (flight servicing), or pre-flight check. However, the authorisation requirements for the APU ground runner apply at all times and the aircraft is not to be left unattended by the APU runner while the APU is running.

3. This chapter prescribes the Approved Maintenance Organisation (AMO) responsibilities and procedures to be followed when conducting engine ground runs.

RESPONSIBILITIES

Senior Maintenance Managers

4. The Senior Maintenance Manager (SMM) is responsible for ensuring:

  1. engine ground runs are performed when the operation of an aircraft or aeronautical product needs to be proven before next flight
  2. personnel are authorised to ground run aircraft engines in accordance with this chapter
  3. nominated delegates have been authorised to certify that any outstanding maintenance on the aircraft will not affect the engine ground run
  4. a system is in place, which if applicable, ensures all engine cycle data is recorded
  5. ground runners and ground run instructors are monitored to ensure competence is maintained and authorisations remain valid
  6. local instructions include:
    1. a list of personnel authorised to ground run engines applicable to type
    2. the authorisation currency requirements, including the minimum aircraft engine operations to be performed during the authorisation period to maintain currency
    3. procedures or limitations that are applicable to the engine ground run which are not published in the appropriate aircraft or engine operating manuals
    4. minimum requirements for the training, testing, authorisation and qualification of personnel
    5. precautions required for the preparation and safe ground operation of aircraft, eg tethering requirements, wind limitations, jet blast danger areas, noise interference, engine ground run areas
    6. details of types of ground runs permitted to be carried out by AMO personnel on rotary wing aircraft
    7. AMO unique procedures for aircraft documentation certification (and release for rotary wing aircraft with rotors engaged) post ground run.

Ground Runner

5. The Ground Runner is responsible for:

  1. ensuring the recording and certification system is checked for any unserviceability or configuration that could adversely impact the safe operation of the aircraft during the ground run
  2. certifying for acceptance of the aircraft in the recording and certification system (ground runners charge)
  3. that the applicable safety precautions in Section 8 Chapter 2—General Aircraft Safety are adhered to
  4. ensuring the ground run is carried out in accordance with authorised maintenance data pertaining to the task
  5. certifying for the completion of the ground run in the recording and certification system.

AUTHORISATION REQUIREMENTS

Installed Aircraft Engines (Fixed Wing)

6. The following personnel may be authorised to ground run installed fixed wing aircraft engines:

  1. Aircrew
  2. aviation engineer officers
  3. aviation technical personnel.

Installed Aircraft Engines (Rotary Wing)

7. The following personnel may be authorised to ground run installed rotary wing aircraft engines:

  1. With Rotors Engaged - pilots authorised on type
  2. Without Rotors Engaged - aircrew, aviation engineer officers or aviation technical personnel, of CPL/LS rank and above or civilian equivalent.

Auxiliary Power Units

8. The following personnel may be authorised to ground run an APU:

  1. Aircrew
  2. aviation engineer officers
  3. aviation technical personnel.

Engines in Test Stands and Facilities (Fixed or Mobile)

9. The following personnel provided they are authorised, qualified and current on both engine type and the operation of the particular test stand or facility may run engines in test stands and facilities:

  1. aviation engineer officers
  2. aviation technical personnel.

AUTHORISATION PROCESS

Authorisation of Ground Run Instructors

10. AMO ground run instructors must be authorised by the SMM and the authorisation recorded in their record of training and employment document. The entry should list the aircraft engine type authorised to instruct on and any limitations that apply.

Authorisation of Ground Runners

11. When personnel have satisfied all prerequisite requirements, an authorisation entry must be annotated within a record of training and employment document. The entry must state the type of aircraft engine that can be ground run and any limiting conditions that may apply.

Withdrawal of Authorisation

12. Withdrawal of authorisations must be conducted in accordance with Section 2 Chapter 1—Maintenance Authorisations.

GROUND RUN CHECKLIST

13. Aircraft engines must be ground run in accordance with approved checklists. The System Program Office for an aircraft type is responsible for the issue and amendment of checklists and will ensure that such checklists clearly identify the engine operating procedures and limitations.

SAFETY PRECAUTIONS

Fixed Wing Aircraft

14. Precautions to be observed prior to ground running fixed wing aircraft are as follows:

  1. The operator running the engine is to obtain visual clearance from observation personnel before engagement of the starter.
  2. Personnel are to observe danger areas, warnings, aircraft precautions, and the markings in accordance with the relevant aircraft publications and local instructions.

Helicopter Rotors Engaged

15. Precautions to be observed prior to aircrew ground running helicopters with rotors engaged are as follows:

  1. The pilot responsible for the ground run is to obtain visual clearance from the aircraft safety guard/director prior to engagement.
  2. Personnel standing by a helicopter engaging or shutting down are to keep clear of the rotor disc area of the aircraft, as it is possible for rotor blade tips to dip below head height while turning.
  3. Personnel are to keep clear of the tail rotor.

GROUND RUN SUPERVISION

Ground Running of Installed Aircraft Engines

16. During the ground running of installed aircraft engines, the aircraft's designated captains seat or flight engineers station must be occupied at all times, by:

  1. a ground runner authorised on the aircraft type, or
  2. a person under training/assessment, who is under the direct supervision of a ground run instructor on the aircraft type.

DOCUMENTATION REQUIREMENTS

17. All documentation must be completed in accordance with Section 4 Chapter 2—Recording and Certification of Aircraft and Aeronautical Product Maintenance.

18. When a ground run is necessary for fixed wing or rotary wing, with or without rotors engaged, the following entry must be made in recording and certification system, ‘Ground run required for... (reason and Serial Number of Work (SNOW) in accordance with... (applicable servicing schedule and/or local instructions)’ in the unserviceability field.

Ground Run Authorisation

19. The SMM or delegate must independently check the aircraft documentation to ensure no outstanding maintenance will compromise the ground run and certify in the recording and certification system for the aircraft.

20. The certification must indicate that all applicable entries have been placed in the recording and certification system and the aircraft is capable of being ground run.

Ground Run Acceptance

21. After the SMM or delegate has certified the aircraft capable of being ground run, the ground runner must crosscheck the documentation and certify in the recording and certification system for the aircraft.

22. This certification indicates the ground runner has checked the documentation and accepts responsibility for the aircraft and the ground run.

Ground Run Completion

23. On completion of the ground run, the ground runner must enter in the corrective action field against the entry detailed in paragraph 18 ‘Ground run completed in accordance with...(applicable servicing schedule and/or local instructions)’ and certify with a signature and DTG in the recording and certification system. This certification closes the entry for the specific engine ground run and releases the aircraft back to general maintenance.

MAINTENANCE FOLLOWING AIRCRAFT ACCEPTANCE

24. Where the requirements exist, conduct of maintenance is permissible after the ground runner has accepted responsibility for the aircraft and the ground run provided that:

  1. the maintenance task is approved by the SMM or delegate
  2. the ground runner is satisfied that the maintenance will not compromise safety
  3. the maintenance is recorded in the recording and certification system
  4. authorised maintenance data is used and authorised personnel perform the maintenance.

25. These procedures provide an avenue for maintenance to be conducted, without the requirement of further pre-engine run entries/authorisations, eg multiple ground runs, or release to general maintenance.

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