AIRWORTHINESS DIRECTIVE

CAA-AD-046/2001

Date of issue: May 29, 2001

ENGINE - EXHAUST STACKS - INSPECTION

Applicability: Rotax 914 F Series engines.

Effective date: June 1, 2001.

Compliance : Required as indicated in AC AD 106-2001.

Remarks:. The compliance of this AD must be recorded in Engine Logbook, where applicable the requirements of this AD must be integrated into Aircraft Technical Documentation. Address inquiries concerning this AD to: Civil Aviation Authority, Airworthiness Division, Ruzyne Airport, 160 08 Prague 6, Czech Republic, tel: 420 2 33320922, fax: 420 2 20562270

Ing. Pavel MATOUŠEK
Director of Airworthiness Division
CAA CZ

AIRWORTHINESS DIRECTIVE

No. 106

Inspection for possible cracks on exhaust stacks (exhaust tubes between cylinder-head and exhaust) on Rotax 914 F Series engines

1. Applicability: Rotax 914 F Series engines

2. Subject: Inspection for possible cracks on exhaust stacks (exhaust tubes between cylinder-head and exhaust)

3. Reason: On aircraft with Rotax 914 F engines cracks on the exhaust stacks (exhaust tubes between cylinder-head and exhaust) were detected.

4. Action: A detailed visual inspection on the exhaust stacks (exhaust tubes between cylinder-head and exhaust) have to be carried out within the compliance time.

The technical informations of Bombardier Rotax Service Bulletin SB-914-017 are herewith

part of this AD.

5. Compliance:

a) initial inspection within 50 flight hours, but not Later than 01 June 2001, according referenced Bombardier Rotax SB-914-017

b) every 50 flight hours inspection of the exhaust stacks (exhaust tubes between cylinder-head and exhaust) according referenced Bombardier Rotax SB-914-017

6. Accomplishment: The required action has to be accomplished by the manufacturer or by a Licensed/qualified person. An entry into the aircraft Log has to be done.

7. Effective Date: 25. April 2001