CHAPTER 53
FUSELAGE
53-00 Description
The R66 is a ve-place, single main rotor, single engine helicopter constructed primarily of
metal and equipped with skid type landing gear.
The primary fuselage structure is welded steel tubing and riveted aluminum sheet. The tailcone
is a monocoque structure in which aluminum skins carry most primary loads. Fiberglass and
thermoplastics are used in secondary cabin structure and in various ducts and fairings.
Several cowl doors provide access to the drive system, engine, engine oil tank, fuel ller cap,
and fuel sump drain. A right-side door provides access to the main baggage compartment.
Removable panels and cowlings allow additional access to controls and other components for
maintenance.
The instrument console hinges up and aft for instrument and avionics access. The battery is
installed behind an access panel under the left front seat, or in the main baggage compartment,
depending on aircraft conguration.
The engine is located aft of the main baggage compartment. The engine compartment is
isolated from the rest of the airframe by stainless steel rewalls in front of and above the
engine.
53-10 Cabin Assembly
The cabin assembly is a non-field-replaceable assembly.
53-11 Repair
1. Vertical firewall replacement must be performed at the factory in a jig. Firewall repairs
may be accomplished in accordance with U.S. FAA Advisory Circular 43.13-1B Section
4-59. Firewall material is 0.016 inch, type 301, one-quarter hard corrosion-resistant
(CRES) steel.
2. Keel panel replacement must be performed at the factory in a jig. Keel panel repairs may
be accomplished in accordance with U.S. FAA Advisory Circular 43.13-1B Sections
4-58 and 4-59. Keel panel material is 0.025 inch, 2024-T3 clad aluminum sheet.
3. To preserve crashworthiness, seat assembly maintenance is limited to replacement
only.
25 OCT 2010 R66 Maintenance Manual Chapter 53 Fuselage Page 53.1
To Next Page
Loading...