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Questions and Answers
What is the primary purpose of a backup in MMEL dispatch condition?
What is the primary purpose of a backup in MMEL dispatch condition?
- To ensure all safety objectives are met during routine flights.
- To enhance pilot control in any situation.
- To manage various types of electrical and control failures. (correct)
- To limit the use of fly-by-wire systems.
Which scenario is least likely to require the use of backup systems due to the fly-by-wire architecture?
Which scenario is least likely to require the use of backup systems due to the fly-by-wire architecture?
- All-engine flameout.
- Loss of both elevators.
- Temporary loss of power supply. (correct)
- Total loss of ailerons and spoilers.
What law occurs in case of an electrical emergency configuration?
What law occurs in case of an electrical emergency configuration?
- Backup systems are immediately activated.
- Manual control is automatically engaged.
- Alternate law remains available for flight operations. (correct)
- The aircraft switches to gravity feed fuel system.
Flashcards
Backup purpose in MMEL
Backup purpose in MMEL
The backup system ensures safety in case of critical electrical or mechanical failures in a flying system.
Critical failures covered by backup
Critical failures covered by backup
The backup manages temporary/total power loss, multiple fly-by-wire computer failures, elevator failures, and aileron/spoiler loss.
Backup system's usage likelihood
Backup system's usage likelihood
The backup system is designed for rare, severe failures, making its actual use very unlikely.
Backup activation triggers (example)
Backup activation triggers (example)
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Alternate law availability
Alternate law availability
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Study Notes
Backup System Purpose
- Backup systems are designed to meet safety requirements during critical situations in MMEL dispatch.
- These systems aim to handle temporary or complete power loss.
- They account for situations like losing 5 fly-by-wire computers, both elevators, or full aileron and spoiler failure.
Backup System Reliability
- The backup system is statistically improbable to be triggered, due to the fly-by-wire design.
- This is because alternative operational modes are readily available in emergencies, such as electrical failures or engine flameouts.
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