190-01717-B1
G500/G600 TXi Part 23 AML STC Maintenance Manual
Rev. 1
Page 5-34
5.12.3 Pressure Sensors
Manifold pressure, oil pressure, and fuel pressure sensor installations are similar. Garmin pressure sensors
with a brass housing are limited to aircraft with operational ceilings up to 25,000 feet. Garmin pressure
sensors with a stainless steel housing may be used on all aircraft on the AML.
When replacing existing sensors:
•
Do not remove engine and fuel fittings with an intentionally reduced orifice. It may limit fluid loss
and fire damage in the event of a hose failure.
•
Inspect the condition of all existing tubes, hoses, and fittings that are being reused, replace if
necessary.
When installing pressure sensors:
1. Fuel and oil hoses in the engine compartment must meet TSO-C53a Type C or D (fire resistant).
2. Do not install sensors directly below fittings or components that may leak flammable fluid.
3. Thread sealant or tape must be used for the NPT threads. To reduce the risk of system
contamination, minimal amount of sealant should be applied leaving at least 2 threads at the end of
the fitting clear of sealant/tape.
4. Sensors must be routed as far away from the aircraft exhaust system as practical and no closer than
6 inches.
Table 5-1 Pressure Sensor Equipment List
Function
Manufacturer P/N, Description
Garmin P/N
Authorization
Oil Press
Kavlico P4055-5020-4, Press
(Brass)
011-04202-30
(494-30027-30)
TXi STC
Kulite APT-20GX-1000-150G,
Press (Stainless)
494-30032-00
Manifold Press
Kavlico P4055-5020-1, Press
(Brass)
011-04202-00
(494-30027-00)
TXi STC
Kulite APT-20GX-1000-25PSIA,
Press (Stainless)
494-30030-00
Fuel Press
Kavlico P4055-5020-3, Press
(Brass)
011-04202-20
(494-30027-20)
TXi STC
Kavlico P4055-5020-2, Press
(Brass)
011-04202-10
(494-30027-10)
APT-20GX-1000-50PSIG, Press
(Stainless)
494-30031-00
APT-20GX-1000-15PSIG, Press
(Stainless)
494-30029-00
