Please capitalize where necessary: we have an onboard aisle wheelchair on each ryanair aircraft, which crew use to assist reduced mobility passengers getting to and from the aircraft toilet door.
A: We have an onboard aisle wheelchair on each Ryanair aircraft, which crew use to assist reduced mobility passengers getting to and from the aircraft toilet door.
Q: what is file extension nav?

A: What is File Extension NAV?
Q: dfs draws up a checklist of requirements that have to be met before the installation can begin.
A: DFS draws up a checklist of requirements that have to be met before the installation can begin.
Problem: high quality single strand 8-9mm natural purple freshwater pearl necklace with 925 sterling silver chains (no box)
Can you repeat this sentence, but capitalize it?
Answer: High Quality Single Strand 8-9mm Natural Purple Freshwater Pearl Necklace With 925 Sterling Silver Chains (No Box)
Text: low cardiac output (e.g., congestive heart failure, cardiac arrhythmia [heartbeat irregularities], or pericardial disease [disease of the sac that encloses the heart])

Correct capitalization: Low cardiac output (e.g., congestive heart failure, cardiac arrhythmia [heartbeat irregularities], or pericardial disease [disease of the sac that encloses the heart])
Text: total consumption (w): 334

Correct capitalization:
Total consumption (W): 334