Can landing gear be retracted after emergency extension?

The procedure for retracting landing gear after an emergency extension is designed to ensure safety and functionality of the aircraft's landing gear system. When the landing gear is extended using emergency procedures, it typically involves a mechanical or gravity-operated system that bypasses the normal hydraulic operation. This is often a one-way process, meaning that once the landing gear is in the extended position through emergency means, retracting it is not feasible because the systems that allow for normal retraction may not be operational.

Retracting the landing gear after an emergency extension could lead to complications that might prevent safe landing or create a risk during flight, as the aircraft’s systems might not be configured to manage that retraction safely. The aircraft design itself often includes safety features that prevent unintended actions that could jeopardize safe operation after an emergency situation.

The other answer choices suggest scenarios that either assume retraction is possible or conditional, but these do not align with standard operating procedures and aircraft design principles concerning emergency land gear management. Thus, option B accurately reflects the limitation placed upon pilots post-emergency extension of landing gear.