Game Composites GB1 GameBird, Maintenance Manual

Page: 153 / 269

Maintenance Manual GB1 GameBird
Page date: April 24, 2020
31-3
Pitot and Static Plumbing
PVC Hose
Type: PVC hose 6 mm / ¼” ID, 8 mm 5/16” OD
Source: Game Composites
Connectors
Connection hose to airspeed indicator, altimeter and ADHRS GSU25:
Nylon Elbow 1/4” tube to 1/8” pipe, PN 0711 -153
Source: Game Composites
Nylon Adapter 1/4” tube to 1/8” pipe, PN 0701 -151
Source: Game Composites
Connectors for tubing:
Nylon Tee 1/4” tube, PN 0716 -015
Source: Game Composites
Quick disconnect, both sides, PN05-01037
Source:
Game Composites
To clean the lines, disconnect all ends of each line (instrument- and air data probe side), use compressed air to
remove fluids or other contamination. Inspect as required in accordance with section
5-06 item 19.
Pitot Tube Assembly GB1-3690-31-00
The pitot tube assembly is mounted to the underside of
the LH wingtip with 4 AN525-832R9 fasteners.
To service or replace the unit:
1. Remove AN525-832R9
2. Remove hose clamp
3. Slide off hose
4. Check for contamination in the pitot tube
5. Check overall condition for damage, permanent
deformation or cracks
6. Clean, repair or replace as required
7. Reinstall reversing steps 3 - 1
Pitot-Static Test
The following procedure describes testing of the pitot-static system and connected instruments and devices.
Perform this test any time an instrument, pitot tube, fitting, line, or pitot tube is disconnected.
Exception: Use of quick disconnect.
A calibrated pitot-static tester is required.
This procedure is written for the Laversab Model 6300, adjust procedure per available tester.
1. Connect the aircraft adapters and hoses to the pitot tube and static ports.
Do not yet connect the hoses to the tester.
2. Set both altimeters to “Standard”, 29.92 inHg or 1013.25 mbar.
3. Turn on the tester and check the Leak Timers to 1 minute.
4. Set the Static Rate target to 6.000 ft/min.
5. Set the Pitot Rate target to 200kts.
6. Open the Pitot and Static ports on the tester to ambient and perform the Self-Test of the tester.
Pitot and Static Vent valves must be closed.
7. Connect the hoses to the tester. Perform the Go-To-Ground function using the GND key.
Wait for the targets to be achieved.
8. If targets are not achieved, or if Actual values are fluctuating, the Pitot or Static system is open /
leaking and is unable to achieve the targets. Turn Off tester and fix problem before proceeding.
9. Once the tester is very stable in Control mode at Ground, set the Pitot target to 100 knots and GO.