Garmin G1000 Pilot’s Guide for the Socata TBM 850
190-00709-00 Rev. A
3-16
ENGINE & AIRFRAME SYSTEMS
CAS DISPLAY INHIBITS
Inhibits prevent certain CAS messages from being displayed during the following conditions:
• Engine off
• Engine on
• Aircraft on ground
• Takeoff
• Aircraft in air
• Landing
Takeoff and Landing Operation Phase inhibits (TOPI and LOPI) are implemented to reduce flight crew
workload and distractions during takeoff and landing. The following tables list the criteria which must be met
to activate or deactivate TOPI or LOPI; only one criterion must be met for activation or deactivation to occur.
Activation
Deactivation
Transitions from on-ground to in-air
Airborne > 25 sec
IAS transitions > 50 knots (on either PFD)
IAS < 40 knots (on either PFD)
IAS invalid (on both PFDs)
Radar altitude (if available) > 400 ft AGL
Pressure altitude > 400 ft above field elevation*
Active > 90 sec
* Pressure altitude captured when the aircraft transitions from on-ground to in-air
Table 3-5 Takeoff Operation Phase Inhibit (TOPI) Activation/Deactivation Criteria
Activation
Deactivation
Transitions from in-air to on-ground
On-ground > 25 sec
IAS < 40 knots (on either PFD)
IAS invalid (on both PFDs)
Radar altitude (if available) transitions < 400 ft AGL
GPS altitude transitions < 400 ft above field elevation*
Radar altitude (if available) > 600 ft AGL
GPS altitude > 600 ft above field elevation*
Active > 90 sec
* Stored in terrain database
Table 3-6 Landing Operation Phase Inhibit (LOPI) Activation/Deactivation Criteria
Inhibits affecting each warning and caution message are indicated with an “X” under the corresponding inhibit
column in tables 3-3 and 3-4. Alerts affected by an inhibit are not displayed while the inhibit is enabled. If an
alert is displayed prior to the activation of an inhibit affecting it, the alert continues to be displayed normally
until the condition causing the alert ceases to exist.
If a GEA or GIA fails, all CAS messages depending on sensors associated with that LRU are automatically
inhibited. Inhibits cannot be activated by invalid sensor data.
