If the Structural Repair Manual cannot be used to develop a repair plan, what should be done?

When the Structural Repair Manual (SRM) is not available for developing a repair plan, seeking engineering disposition is the appropriate course of action. This is because engineering disposition involves consulting with qualified engineers who can assess the situation and provide guidance on how to proceed safely and effectively. Engineers have the technical expertise to evaluate the specific conditions and requirements for the repair, ensuring compliance with safety regulations and standards.

Engineering disposition can lead to the creation of a tailored repair solution that takes into account the unique aspects of the damage and the aircraft's requirements. This approach mitigates any risks associated with making repairs without the appropriate guidance, which could compromise the integrity of the aircraft or violate regulatory standards.

In contrast, other options may not provide the necessary oversight or assurance. Consulting the aircraft manual may not contain specific information on structural repairs, waiting for further instructions could delay necessary repairs and result in downtime, and performing the repair without proper authorization risks compromising safety and could lead to more significant issues down the road.