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Thread: Vnav does not engage on the ground B737NG
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Old 15th May 2018, 20:31
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Skyjob
 
Join Date: Jan 2000
Location: FL410
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Are yo usure the correct hardware is installed as well on this aircraft?

Requirements VNAV armed for takeoff:
  • Valid flight plan (beware of an off centre runway alignment, if need be execute direct first waypoint)
  • Performance data entered and executed (may need to reengage VNAV after an update to this)
  • Both flight directors ON
  • Hardware requirements:
    • Rockwell Collins P4 FCC or later
    • or Honeywell -710 FCC or later
    • and CDS BP06 software installed
If an older version of FCC or CDS software is installed VNAV will not engage or arm on ground.
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