The airplanes were delivered with recommended inspection programs to keep them airworthy.
答案解析
解析：
A选项说飞机的交付需要确保其适航性，因此需要按照客户的检查程序进行检查。这个选项是错误的，因为题干并没有提到客户的检查程序，而是提到了建议的检查程序。
B选项说飞机是适航的，因为它们是按照建议的检查程序交付的。这个选项与题干的意思是一致的，因此是正确答案。
C选项说飞机是按照强制性的检查程序交付的，以确保它们的适航性。这个选项是错误的，因为题干中提到的是建议的检查程序，而不是强制性的检查程序。
因此，答案是B。
让我们通过一个生动的例子来加深理解。就好比你买了一辆新车，厂家建议每5000公里做一次保养，以确保车辆的正常运行。如果你按照厂家的建议去做保养，那么你可以认为你的车是适于行驶的。这个例子就类似于题干中提到的飞机按照建议的检查程序交付，因此是适航的。
相关知识点：
飞机按程序交付保适航
相关题目
High-time airplanes, disassembled for major overhaul, were inspected to assist in selecting inspection items. Other high-time airplanes’ special Continuing Airworthiness Program Inspection results supplement these inspections.
In addition to understanding FAA Advisory Circulars AC 91-60 and AC 91-56, familiarity with GAMA Specification No.2, Manufacturers Maintenance Data and Air Transport Association of America Specification No.100, Specification for Manufacturers Technical Data, will aid in the preparation of a CAP for a specific airplane.
The Continuing Airworthiness Program Inspection Document (CAP) is inspection data that, when combined with the operator’s existing maintenance program, will help maintain the structural integrity and continued airworthiness of the ABC XXX Series airplanes.
REPAIR/MODIFICATION sets forth repair or modification instructions and may refer to a standard repair in another document or a special repair or modification defined elsewhere, such as in a service kit, service bulletin, etc.
SIGNIFICANT INSPECTION CONDITION (detectable crack size, wear limits, corrosion condition, ctc.) specifies, for a crack inspection, the minimum size crack expected to be discovered. Specifies, for other inspection conditions, the wear limits, corrosion pit depth. etc.
INSPECTION COMPLIANCE sets forth instructions regarding “when” an inspection is required and whether it is repetitive. Also state if additional repetitive inspections are required based on initial inspection results.
In two digits of Section Number in the Continuing Airworthiness Program lnspection number, the first digit is determined by GAMA Specification No. 2 Numbering System, and the second digit is determined sequentially by the manufacturer.
The manufacturer may establish procedures to provide feedback (from operators and maintenance facilities who comply with a CAP) on unairworthy conditions (whether covered or not covered by the CAP) that were discovered when complying.
In addition to applicable airplane models or components, the Applicability Statement may also contain special information, such as exclusions or additions, in note form.
The Preface contains the following information: (l) The reasons for establishing the CAP program and the underlying problems to be prevented by compliance with the specific CAP. (2) The relationship of the CAP to normal inspection programs for the airplane.
