Aeroplane Flight Manual — Section Normal Procedures / Loss of Avionics — Engine Indications During Engine Start — Amendment
- Published
- Effective
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must implement the specified Temporary Revision No. 31 to the Pilatus PC-12/47E Pilots Operating Handbook within 30 days of the directive's effective date. All flight crew must be informed of the updated procedures and operate the aircraft accordingly. Compliance can be achieved by inserting the TR or a later approved revision that includes it.
Summary
EASA Airworthiness Directive 2025-0201 is an amendment concerning Pilatus PC-12/47E aeroplanes with manufacturer serial numbers 1720 and 2001 to 2999 inclusive. It addresses an issue during engine start where battery voltage drops cause avionics shutdown, resulting in loss of engine parameter indications including Interstage Turbine Temperature (ITT). This directive mandates updates to the Aeroplane Flight Manual to enhance engine start procedures.
What changed
This directive requires the insertion of a Temporary Revision (TR No. 31) into the Pilatus PC-12/47E Pilots Operating Handbook to provide updated engine start procedures that mitigate the risk of ITT exceedance undetected due to avionics shutdown. The amendment introduces specific instructions to ensure engine parameters remain visible during ground engine start.
Why it matters
The directive is critical for maintaining turbine blade structural integrity by preventing undetected ITT exceedance during engine start, which could lead to engine failure and loss of thrust. Operators and maintenance teams must comply to ensure continued airworthiness and safe operation of affected PC-12/47E aircraft. It also ensures regulatory compliance with EASA continuing airworthiness requirements.
More for Pilatus Aircraft PC-12
All 18- EASA SIB 2026-07EASA Safety Publication Tool – Log of RevisionsJul 14, 2026
- EASA AD 2025-0271Central Maintenance System — Central Computer / Primus APEX Operational Software — ModificationDec 2, 2025
- EASA AD 2025-0182Equipment and Furnishings — Emergency Exit / Passenger Service Unit Trim Panel Installation — ModificationAug 25, 2025
- EASA AD 2023-0184Time Limits / Maintenance Checks — Airworthiness Limitations Section — AmendmentOct 19, 2023
- EASA AD 2022-0245
Get the next one by email
New ADs and bulletins for Pilatus Aircraft PC-12, summarized like this page, every Monday.