Everything the previous lesson demanded of an operator presumes a moment when a company proved it could deliver all of it. That moment produces the air operator certificate, the AOC: the document certifying that the operator has the professional ability and organisation to conduct the operations it names safely. This lesson follows the certificate through its life: the application, the people and premises behind it, its issue and open-ended validity, and what the paper itself says.
Applying for an AOC
Prior to commencing commercial air transport operations, the operator shall apply for and obtain an AOC from the competent authority. One boundary sentence saves later confusion: the AOC is a safety certificate, and sits apart from the operating licence of Regulation (EC) No 1008/2008, the economic authorisation an EU air carrier also needs; the exam's subject is the AOC. The application file the authority receives must contain:
The applicant's identity — official name and business name, address and mailing address.
A description of the proposed operation — including the type and number of aircraft to be operated.
A description of the management system — including the organisational structure, the previous lesson's machinery on paper.
The name of the accountable manager — the person whose direct safety accountability the system hangs on.
The nominated persons — names, qualifications and experience of the required post-holders.
A copy of the operations manual — the whole rulebook the operator proposes to fly by.
A compliance statement — that the applicant has verified all the submitted documentation and found it compliant.
The acceptable means of compliance add the clock: the application goes in at least 90 days before the intended start of operation, with the operations manual allowed to follow up to 60 days before the start. And the applicant must demonstrate three things: that the operation complies with the essential requirements and with Part-ORO, Part-CAT and Part-SPA; that every aircraft operated holds a certificate of airworthiness or is dry-leased (hired in without crew) under the leasing rules; and that the organisation and management are suitable and properly matched to the scale and scope of the intended operation. That last phrase does real work: a certificate is granted to a fit organisation, not to a fleet.
The people and the premises
The certification rules then pin down who runs what. The operator shall nominate persons responsible for the management and supervision of four areas: flight operations, crew member training, ground operations, and continuing airworthiness. One person may hold more than one of the nominated posts, if that arrangement is suitable and properly matched to the scale and scope of the operation; their functions, responsibilities and names belong in the operations manual.
Below the nominated persons, the operator must employ sufficient personnel for the planned ground and flight operations, each properly trained, able to demonstrate their capabilities, and aware of their responsibilities and of how their duties relate to the operation as a whole. Supervision gets its own clause: enough supervisors, with defined duties and the experience and skill to hold the operation to the standards of the operations manual.
The premises follow the same logic. The operator makes use of appropriate ground handling facilities, arranges operational support at the main operating base appropriate to the area and type of operation, and provides working space at each operating base sufficient for everyone whose actions affect flight safety, from ground crew and operational control to record storage and crew flight planning. And on documentation, two short duties close the set: the operator arranges the production of its manuals and amendments, and must be capable of distributing operational instructions without delay.
Issue, validity and revocation
The authority's side is mercifully short: the competent authority shall issue the AOC when satisfied that the operator has demonstrated compliance with the application requirements. It may attach specific operational limitations, and those are documented in the operations specifications. What the exam probes is what happens afterwards: nothing. There is no periodic renewal and no expiry date. The certificate remains valid subject to three continuing conditions:
Continued compliance — the operator keeps meeting the requirements, under the rules for handling findings.
Access — the authority can reach the operator at any time: any facility, aircraft, document, record or procedure relevant to its activity, contracted out or not, including entering and remaining in the aircraft during flight operations, though the commander may refuse the flight crew compartment in the interest of safety.
The certificate is not surrendered or revoked — and upon revocation or surrender it is returned to the competent authority without delay.
So an AOC is best read as a standing claim, continuously falsifiable: the operator is compliant until an audit, an inspection or its own surrender says otherwise. That is why the previous lessons' machinery of monitoring and records is not bureaucracy but the certificate's life-support.
What the certificate says
The certificate itself is a one-page form with fixed contents: the state of the operator and the issuing authority, the AOC number, the operator's registered name and any trading name, the principal place of business with its contact details, a pointer to where the operational points of contact are listed, the types of operation authorised, passengers, cargo or other, the date of issue, and the issuing official's name, title and signature. Its operative sentence certifies that the operator is authorised to conduct commercial air transport operations as defined in the attached operations specifications, in accordance with the operations manual.
That sentence makes the operations specifications the certificate's business end. The privileges of the operator, including every specific approval granted under Part-SPA, are specified there. The form is organised by aircraft type: the per-operation grants the previous lesson introduced, held or not held, then the area of operation, worldwide or bounded by coordinates, national borders, flight information regions or ICAO regions, and any limitations the authority attached. Non-commercial and specialised operators carry the same information on a list of specific approvals instead; the operations-specifications form belongs to the AOC.