Tecnam P2002 JF - Page 1071

2
nd
Edition - Rev 0
SUPPLEMENT SG-3
CHAPTER 31 - INDICATIONG SYSTEM
Page 104
Annunciation
Associated
LRU
Solution
TAS FAIL
AIRSPEED FAIL
ALTITUDE FAIL
VERT SPEED FAIL
GDC 74A
 Ensure that a cell phone or a device using cell
phone technology is not turned on (even in a
monitoring state) in the cabin.
 Check PFD Alert Window for PFD, MFD or
GDC configuration, software or failed data path
error messages. Correct any errors before pro-
ceeding.
 Inspect GDC 74A pitot/static ports and plumb-
ing for blockage.
 Check GDC 74A configuration settings. Reload
if unsure they are correct.
 If configuration settings are correct, replace the
GDC 74A configuration module.
 If problem persists, replace the GDC 74A.