SEL-78-01R1 - Exhaust Inspection for Cracks (CESSNA MODEL T206H)

CESSNA SEL-78-01

TITLE:     EXHAUST - EXHAUST INSPECTION FOR CRACKS

EFFECTIVITY:  

MODEL SERIAL NUMBERS                         T206H T20609063 thru T20609125, T20609132 thru

                                                                                                     T20609143, T20609145

COMPLIANCE : MANDATORY. 

Until the Lycoming 40B22621 or 40B23388 Cylinder Number 3 Exhaust Pipe has no less than 400 flight hours, an Exhaust System Inspection must be accomplished as follows: (Refer to the Model 206H/T206H Maintenance Manual, Chapter 78, Exhaust System (Turbocharged) - Maintenance Practices)

1. Before further flight if one or more of the conditions that follow exist:

• Cowl Discoloration in the area of the Number 3 Exhaust Pipe

• CO alert

• Uncommanded or unexplained reduction of Manifold Absolute Pressure (MAP).

2. Within the next 25 hours or at the next scheduled oil change, whichever occurs first, and then again at each subsequent oil change not to exceed 50 hours since last inspection.

NOTE: The holder of a pilot certificate issued under 14 CFR Part 61 may perform the special inspections required by this service letter and the associated required logbook entries on any aircraft owned or operated by that pilot which is not used under part 14 CFR Part 121, 14 CFR Part 129, or 14 CFR Part 135.

If a crack is found, Lycoming Mandatory Service Bulletin No. 614A must be accomplished before

further flight.

NOTE: Lycoming Mandatory Service Bulletin No. 614A may be accomplished in lieu of the special

inspections required by this service letter.

NOTE: When the Lycoming 40B22621 or 40B23388 Cylinder Number 3 Exhaust Pipe has more than 400 flight hours or when Lycoming Mandatory Service Bulletin No. 614A has been accomplished, the special inspections required by this service letter are no longer necessary