AIRCRAFT MAINTENANCE MANUAL
DFE-AMM-AR1
Rev. 1 – 07/24/2014
7-1
Section 7 – UTILITY SYSTEMS
7.1.
GENERAL
This Section identifies the line maintenance, minor repair, and minor alteration tasks that can be
accomplished in the aircraft utilities systems by the Aircraft owner (only for ELSA), a Sport Pilot or higher or a
holder of an LSA repairman certificate with either an inspection or maintenance rating.
No heavy maintenance, major repairs, or major alterations, as outlined in ASTM F2483 Sections 7
through 9, are authorized at this time, for this ALTO aircraft utilities systems.
Any heavy maintenance, major repairs, or major alterations, as outlined in ASTM F2483 Sections 7
through 9, can only be performed by Direct Fly S.R.O. or only as provided by Direct Fly‘s’ approved
engineering data.
7.2.
HEATING
7.2.1. Description
A cockpit heating system is standard.
An air duct collects air from behind the water radiator via a fiberglass funnel. The air is then heated
by flowing over the muffler shroud. The air then flows through another air duct which directs it through the
butterfly valve and into the cockpit.
Figure 7-1 to 7-3 –
Heating system
(1- inlet hose, 2-muffler shroud, 3- outlet hose, 4 – inlet of air into the cockpit)
1
2,3
4