Type 2 LOA: where a Navigation Database supplier complies with ED-76/DO-200A AND provides data compatible with specified avionics system(s).

A Type 1 LOA holder cannot release navigation data directly to end users.

Type 1 LOA: where a Navigation Database supplier complies with EUROCAE ED-76 or Radio Technical Commission for Aeronautics ( RTCA) DO-200A Standards for Processing Aeronautical Data, with no specific compatibility with a particular aircraft system.

…the issuance of a letter of acceptance does not give any rights to its holder… The decision whether or not to apply for an EASA letter of acceptance is therefore entirely up to the navigation database supplier concerned. Operators can either make the verifications themselves or use another competent organisation for this purpose and convince directly their responsible authority that they can be allowed to fly in P-RNAV airspace. There is no obligation on operators to buy their data only from organisations holding the letter of acceptance. The final responsibility for the approval of operators for P-RNAV operations remains with the National authorities.

This will ease the obligation on the operator to do the same control and facilitate the issuing by the national competent authorities of the approval for the operators to fly in dedicated airspace where reduced separations are implemented. The letter of acceptance will not attest that the data produced by these organisations can be used by operators, but that the organisation has put in place an appropriate quality system for the control of the processing of data. Through Opinion No 01/2005, EASA offered the industry, via guidance material to Part 21, a voluntary quality system leading to the issue of a Letter of Acceptance (LOA) by the Agency to the European database suppliers.

Background: Management of Aeronautical DatabasesĪt the 2003 FAA/ JAA International Conference, it was agreed that an improved control of data held in aircraft navigational databases is essential as an enabler to support the implementation of the Performance-Based Navigation ( PBN). This is a particularly topical development after the completeness of terrain databases was raised as a concern in the Irish Air Accident Investigation Unit ( AAIU) preliminary report into the loss of Sikorsky S-92A EI-ICR, operated by CHC for the Irish Coast Guard as Rescue 116, at Black Rock off the coast of County Mayo on 14 March 2017.

The European Aviation Safety Agency ( EASA) has recently issued two Executive Director (ED) Decisions on the management of safety-critical aeronautical navigation databases from 1 January 2019 onwards. EASA Decisions on Management of Aeronautical Databases / Part-DAT

Honeywell nav database cycle