What is unchanged?
unchanged Ground personnel positioned at each wingtip to ensure safe clearance of obstacles during aircraft ground movements.
Source: ICAO Doc 9432, FAA PCG
How is “unchanged” Used in Practice?
Ground crew, proceed with engine start when wing walker confirms clearance past obstruction near taxiway.
Certification Exam Relevance
Who Needs to Know This Term?
- Pilots
- Air Traffic Controllers
- Cabin Crew
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What is unchanged?
Ground personnel positioned at each wingtip to ensure safe clearance of obstacles during aircraft ground movements.
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