95-21 Vertical Speed Indicator (continued)
D. Installation
CAUTION
Protect instrumentation using foam padding or equivalent.
Handle instruments like eggs.
1. Turn battery switch off and pull out applicable circuit breaker(s).
2. Remove caps and plugs and connect pitot/static lines. Verify security.
3. Connect wiring as applicable. Verify security.
4. Install screws securing instrument to face. Verify security.
5. Install perimeter screws securing face to console. Verify security.
6. Perform pitot-static system checks as required per § 95-10.
7. Perform appropriate function checks per § 5-40.
E. Scheduled Maintenance and Inspections
Refer to § 5-45 100-Hour/Annual Inspection.
F. Special Maintenance and Inspections
1. If vertical speed indicator displays climb indication but does not return to zero in
level flight, or if indication is erratic:
a. Inspect static system for water or obstructions, and remove water or
obstructions if found.
b. Perform pitot-static system checks as required per § 95-10.
2. Perform appropriate function checks per § 5-40. If vertical speed indicator still
displays erratic indication, or displays no indication, remove indicator per Part C,
and return to RHC for inspection.
3. Install airworthy indicator per Part D.
Page 95.6 Chapter 95 Instrument System APR 2017
To Next Page
