If a starter-generator was repaired following the manufacturer's manual and properly documented, what should an IA do?

The correct action, as indicated by option B, involves rejecting the documentation based on FAA Order 8130.21. This order provides guidance on the use of forms and documents that must be completed for major repairs and alterations, especially regarding parts that involve safety or reliability, like a starter-generator. Under this order, the necessary documentation must be reviewed and approved to ensure that all repairs comply with applicable standards and that the part is returned to service properly.

In this context, acceptance of the repaired starter-generator requires not just documentation but also adherence to specific regulatory requirements that govern the return-to-service process. Additionally, FAA Order 8130.21 outlines conditions under which repairs or alterations must be documented, ensuring that any significant repair follows strict standards to maintain the safety and integrity of the aircraft.

Other options may mention regulations that seem relevant but do not specifically address the requirements set forth in FAA Order 8130.21 regarding the documentation and approval process for major repairs. Understanding and applying the proper orders and regulations is crucial to ensure compliance within the aviation maintenance industry.