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SERVO_TAIL_*_FWD_CALIBRATION: RANGE_INCORRECT

published Last Updated: Oct 9, 2026 HW: EV2HW: EV3
Applicable alarms (3)
SERVO_TAIL_PORT_FWD_CALIBRATION: RANGE_INCORRECTSERVO_TAIL_STBD_FWD_CALIBRATION: RANGE_INCORRECTZIP_EXECUTIVE_V4_TEST_RANGE_INCORRECT
Likely outcomes (0 missions) — click to expand

Based on 0 missions where this alarm fired in the last 90 days (for SERVO_TAIL_PORT_FWD_CALIBRATION: RANGE_INCORRECT) as of 2026-10-13

Aggregated from fleet operations and refreshed daily. Individual outcomes may vary by site and configuration.

These troubleshooting steps are applicable to the following alarms:

  • SERVO_TAIL_PORT_FWD_CALIBRATION: RANGE_INCORRECT
  • SERVO_TAIL_STBD_FWD_CALIBRATION: RANGE_INCORRECT

This alarm indicates the servo cannot achieve the expected calibration range during pre-flight checks. Treat this as a physical tail mechanism issue and follow the suspect tail surface mechanism issue guide.

1 reference
Follow the suspect tail surface mechanism issue guide for field resolution. It covers EV2 and EV3 tail replacement, linkage inspection, manual surface actuation, discrepancy creation, RCCA links, and removed-tail disposition.

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