AD 2010-20-23
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier-Rotax GmbH Type 912 F, 912 S, and 914 F Series Reciprocating Engines |
| engine | Rotax | GmbH Type 912 F | Airworthiness Directives; Bombardier-Rotax GmbH Type 912 F, 912 S, and 914 F Series Reciprocating Engines |
Unsafe Condition
Oil loss caused by cracks in the engine crankcase, which could lead to in-flight failure of the engine and forced landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform a visual inspection of the engine crankcase for cracks within 50 hours time-in-service from the effective date. Inspect especially in the areas of cylinder 1 upper side, between cylinder 1 and 3 upper side, cylinder 4 lower-right side, and the detailed area in Figure 2. If cracks are found, remove the engine from service before further flight. Repeat inspections at each 100-hour, annual, or progressive inspection, or within 110 hours TIS since last inspection, whichever occurs first.
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Compliance Time
Within 50 hours time-in-service from the effective date
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Affected Aircraft
Bombardier-Rotax GmbH Type 912 F series, 912 S series, and 914 F series reciprocating engines with a crankcase serial-numbered 27811 or lower, installed on various aircraft models including Aeromot-Industria Mecanico Metalurgica Itda AMT-300, Aquila Technische Entwiklugen GmbH AQUILA AT01, Diamond Aircraft Industries DA-20A1, Diamond Aircraft Industries GmbH Models HK36TC, HK36TTC, HK36TTC-ECO, and HK36TTS, Iniziative Industriali Italiane S.p.A. Sky Arrow 650 series, SCHEIBE-Flugzeugnau GmbH SF 25C, and Stemme S10-VT aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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