Alexander Schleicher AS 33 ES - User Manual

Flight Manual Flight Manual
Issue: 01.11.2020 TMÖ
Revision: TM 3 28.04.21 TMÖ
4.6
To de-rig: proceed in the reverse order of rigging starting with the hori-
zontal tail, winglets, wing tips and inner wings. We would add the follow-
ing suggestions:
1. Drain all water ballast. To properly do so screw off the cover from
the wing water tank on the upper wing surface and open the valves.
Ensure that all the water has emptied out by putting down alternative
wing tips several times. Despite technical provisions, the wing sur-
faces might suffer from humidity on the long run.
At the wing root there is a drain hole in front of the forward lift pin
bushing. Ensure these holes are open, when wings are put in the
trailer, so that remaining water can spill out. The same applies for
the valves and the openings at the upper wing surface.
2. If a tail water ballast tank is installed, check if water has gathered in
front of the rudder or inside the fuselage tail cone. If water is found,
check all hose clamps, hoses and valve for leaks.
3. If the tailplane is very firmly located in its rear seating, it will be more
easily dismantled by pushing it forwards by the tips.
4. If a battery box according to TN 3 is installed in the baggage com-
partment, then the battery has to be removed before de-rigging the
aircraft. When necessary, also the platform for the clamping lever
can be removed.

Summary

De-rigging Procedures

Drain Water Ballast

Procedure to drain wing water ballast by opening valves and ensuring all water is emptied, including checking wing root drain holes.

Tail Water Ballast Tank Inspection

Check for water in the tail cone and inspect hoses, clamps, and valves for leaks if a tail water ballast tank is installed.

Tailplane Dismantling

Method for dismantling a firmly seated tailplane by pushing it forwards from the tips.

Battery Box and Platform Removal

Instructions for removing the battery box and platform before de-rigging if installed in the baggage compartment.

Optional Avionic Batteries

Avionic-Battery 2

Details on Avionic-Battery 2, its compartment in the baggage area, and its role in supplying electronic instruments.

Avionic-Battery 3

Information about Avionic-Battery 3, its location in the vertical tail, and its function for electrical instruments.

Overview

1. De-rigging Procedures
2. Avionic Batteries
3. Avionic-Battery 2
4. Avionic-Battery 3
5. General Battery Information and Maintenance

The provided manual excerpts describe aspects of the AS 33 Es glider, focusing on de-rigging procedures and optional avionic batteries.

De-rigging Procedures:

The de-rigging process for the AS 33 Es is essentially the reverse of rigging, starting with the horizontal tail, followed by winglets, wing tips, and inner wings. Several suggestions are provided to ensure proper de-rigging and maintenance:

1. Water Ballast Drainage:

   • Function: To remove all water ballast from the wings.
   • Usage Feature: Screw off the cover from the wing water tank on the upper wing surface and open the valves.
   • Maintenance Feature: To ensure complete drainage, the wing tips should be put down alternatively several times. This helps to empty any remaining water.
   • Important Note: Despite technical provisions, prolonged humidity can potentially damage the wing surfaces.
   • Drainage Holes: At the wing root, there is a drain hole located in front of the forward lift pin bushing. These holes, along with the valves and openings on the upper wing surface, must be kept open when the wings are stored in the trailer to allow any residual water to spill out.

2. Tail Water Ballast Tank (if installed):

   • Function: To check for and address any water accumulation in the tail section.
   • Maintenance Feature: Inspect for water gathered in front of the rudder or inside the fuselage tail cone.
   • Troubleshooting: If water is found, all hose clamps, hoses, and the valve should be checked for leaks.

3. Tailplane Dismantling:

   • Usage Feature: If the tailplane is very firmly seated in its rear position, it can be more easily dismantled by pushing it forwards by the tips.

4. Battery Removal (if applicable):

   • Usage Feature: If a battery box, compliant with Technical Note (TN) 3, is installed in the baggage compartment, the battery must be removed before de-rigging the aircraft.
   • Maintenance Feature: If necessary, the platform for the clamping lever can also be removed.

Avionic Batteries:

The AS 33 Es offers two optional avionic batteries, Avionic-Battery 2 and Avionic-Battery 3, in addition to a standard Avionic Battery 1 (implied by the note).

Avionic-Battery 2:

• Function Description: This battery supplies power to the electronic instruments.
• Installation: It is installed in a dedicated compartment on the right side of the upper baggage compartment.
• Technical Specifications:
  • Electrical Protection: A 10A fuse is installed directly at the battery for electrical protection.
• Usage Features:
  • Placement: The battery is inserted into a specially designed deepening in the bottom of the baggage compartment.
  • Securing Mechanism: It is secured by a clamping lever that swivels over the battery once inserted. An integrated detent mechanism prevents unintended twisting of the lever, ensuring the battery remains firmly in place.
• Special Note: For flights where the engine is removed, Avionic-Battery 2 becomes standard.

Avionic-Battery 3:

• Function Description: This battery can also supply power to the electrical instruments.
• Installation: It can be installed in a special compartment at the upper end of the vertical tail.
• Technical Specifications:
  • Electrical Protection: A 10A fuse must be installed directly at the battery for electrical protection.
• Usage Features:
  • Fit: The battery must fit perfectly into its compartment.
  • Securing: If necessary, additional foam must be used to prevent the battery from shifting during flight.

General Battery Information and Maintenance:

• Optionality: Avionic Battery 1 and 3 are still available optionally, even when Avionic-Battery 2 is standard.
• Center of Gravity: When using Avionic Battery 1 and 3, their effect on the center of gravity must be noted (refer to section 6.3 of the manual for details).
• Charging:
  • Primary Method: For charging, the batteries must be removed from the fuselage.
  • Alternative Method: Alternatively, charging can be performed using optional charging sockets.
  • Socket Location: Depending on the custom design, these sockets can be installed in the instrument panel and/or on the right root rib of the fuselage.
  • Electrical Connection Details: Specific details regarding the electrical connection for charging are provided in the maintenance manual.

These procedures and features are crucial for the safe operation, maintenance, and storage of the AS 33 Es glider.

Alexander Schleicher AS 33 ES Specifications

General

Brand	Alexander Schleicher
Model	AS 33 ES
Category	Aircrafts
Language	English