User manual

Table Of Contents
Part B Section 12.53
12.53 AIRFRAME
01 GENERAL
The wing is mounted on a superstructure built up from the hull, and is braced by four struts
from the hull, two on each side. It is an all aluminium structure with stressed skin, semi
cantilevered construction. The trailing edges are metal braced and fabric covered while the
leading edges and the main wing box are metal. The wing also incorporates the engine
nacelles, fuel and oil tanks and two retractable floats with their mechanism.
At the stern the hull tapers to a point and then sweeps up
To form the Dorsal Fin which in turn becomes the lower portion of the vertical stabilizer.
The horizontal stabilizer is bolted to this, followed by the remainder of the vertical stabilizer
.The horizontal stabilizer is metal with reinforced fabric covered tips and elevators
02 THE HULL
The all aluminium hull is divided into 5 sections separated by bulkheads that are watertight
up to the lower part of the door frames. The doors have been removed from the 3 main
bulkheads (Station No's 2,4,6). For water operations the door at Bulkhead No 7 must be in
place and secure.
The integrity of the Hull is to be determined as part of the external checks of the Preflight
inspection.
WARNING: Operating on the water with a damaged Hull is inherently dangerous and
can lead to the loss of the aircraft.
Stichting Catalina PH-PBY Rev No: 00
18 May, 2004 Page: 1