AD 2017-11-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; DG Flugzeugbau GmbH Gliders |
Unsafe Condition
Failure of the connecting rod bearing resulting from too much load on the rod bearings from the engine control unit.
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Required Actions
Within 60 days after June 29, 2017, modify the engine by installing a software update for the engine control unit (ECU) following Solo Kleinmotoren GmbH Technische Mitteilung (TM) 4600-6, Issue 1, dated November 16, 2016. After modification, do not install a replacement ECU or upload any software update to the ECU unless the software version is as specified in TM 4600-6.
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Compliance Time
Within 60 days after June 29, 2017
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Affected Aircraft
DG Flugzeugbau GmbH Model DG-500MB gliders, all serial numbers, equipped with a Solo 2625 02 engine modified with a fuel injection system following Solo Kleinmotoren GmbH Service Bulletin (SB)/Technische Mitteilung (TM) 4600-3 and re-identified as Solo 2625 02i, with a serial number (S/N) up to 369/207, except S/N's 354/194, 356/196, 357/197, 358/198, 361/201, 362/202, 363/203, 364/204, and 368/206.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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