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Unless otherwise specifically authorized, no person may operate an 
aircraft that has an experimental certificate 





   ANSWER: over a densely populated area or in a congested airway. 

   Unless otherwise specifically 
   authorized, no person may operate an aircraft that has an 
   experimental certificate over a densely populated area or 
   along a congested airway. 

How long does the Airworthiness Certificate of an aircraft remain 
valid? 





   ANSWER: As long as the aircraft is maintained and operated as 
   required by Federal Aviation Regulations. 

   The airworthiness certificate of an 
   airplane remains valid as long as the airplane is in an 
   airworthy condition, i.e., operated and maintained as 
   required by the FARs. 

The responsibility for ensuring that an aircraft is maintained in an 
airworthy condition is primarily that of the 





   ANSWER: owner or operator. 

   The owner or operator of an aircraft is 
   primarily responsible for maintaining that aircraft in an 
   airworthy condition. The term "operator" includes the pilot 
   in command. 

Who is responsible for ensuring Airworthiness Directives (AD's) 
are complied with? 





   ANSWER: Owner or operator. 

   Airworthiness Directives (ADs) are 
   regulatory and must be complied with, unless a specific 
   exemption is granted. It is the responsibility of the owner or 
   operator to assure compliance with all pertinent ADs, 
   including those ADs that require recurrent or continuing 
   action. 

The responsibility for ensuring that maintenance personnel make 
the appropriate entries in the aircraft maintenance records 
indicating the aircraft has been approved for return to service lies 
with the 





   ANSWER: owner or operator. 

   Each owner or operator of an aircraft 
   shall ensure that maintenance personnel make the 
   appropriate entries in the aircraft maintenance records 
   indicating the aircraft has been approved for return to 
   service. 

Who is responsible for ensuring appropriate entries are made in 
maintenance records indicating the aircraft has been approved for 
return to service? 





   ANSWER: Owner or operator. 

   It is the responsibility of the owner or 
   operator of an aircraft to ensure that appropriate entries are 
   made in maintenance records by maintenance personnel 
   indicating the aircraft has been approved for return to 
   service. 

If an alteration or repair substantially affects an aircraft's operation 
in flight, that aircraft must be test flown by an appropriately-rated 
pilot and approved for return to service prior to being operated 





   ANSWER: with passengers aboard. 

   If an alteration or repair has been 
   made that substantially affects the airplane's flight 
   characteristics, the airplane must be test flown and approved 
   for return to service by an appropriately rated pilot prior to 
   being operated with passengers aboard. The test pilot must 
   be at least a private pilot and appropriately rated for the 
   airplane being tested and must make an operational check of 
   the alteration or repair made, and log the flight in the aircraft 
   records. 

Before passengers can be carried in an aircraft that has been 
altered in a manner that may have appreciably changed its flight 
characteristics, it must be flight tested by an appropriately-rated 
pilot who holds at least a 





   ANSWER: Private Pilot Certificate. 

   If an alteration or repair has been 
   made that may have changed an airplane's flight 
   characteristics, the airplane must be test flown and approved 
   for return to service by an appropriately rated pilot prior to 
   being operated with passengers aboard. The test pilot must 
   be at least a private pilot and appropriately rated for the 
   airplane being tested. 

A 100-hour inspection was due at 3302.5 hours. The 100-hour 
inspection was actually done at 3309.5 hours. When is the next 
100-hour inspection due? 





   ANSWER: 3402.5 hours. 

   Since the 100-hr. inspection was due 
   at 3302.5 hr., the next 100-hr. inspection is due at 3402.5 
   (3302.5 + 100). The excess time used before the 100-hr. 
   inspection was done must be included in computing the next 
   100 hr. of time in service. 

An aircraft's annual inspection was performed on July 12, this year. 
The next annual inspection will be due no later than 





   ANSWER: July 31, next year. 

   Annual inspections expire on the last 
   day of the 12th calendar month after the previous annual 
   inspection. If an annual inspection is performed on July 12 
   of this year, it will expire at midnight on July 31 next year. 

What aircraft inspections are required for rental aircraft that are 
also used for flight instruction? 





   ANSWER: Annual and 100-hour inspections. 

   All aircraft that are used for hire (e.g., 
   rental) and flight instruction must be inspected on a 100-hr. 
   basis. Also an annual inspection must be completed. 

An aircraft had a 100-hour inspection when the tachometer read 
1259.6. When is the next 100-hour inspection due? 





   ANSWER: 1359.6 hours. 

   The next 100-hr. inspection is due 
   within 100 hr. of time in service. The 100-hr. may be exceeded 
   by 10 hr. in order to get to a place where the work can be 
   done. Add 100 hr. to 1259.6 to get the next inspection, due at 
   1359.6. 

No person may use an ATC transponder unless it has been tested 
and inspected within at least the preceding 





   ANSWER: 24 calendar months. 

   No person may use an ATC 
   transponder that is specified in the regulations unless within 
   the preceding 24 calendar months it has been tested and 
   found to comply with its operating specifications. 

Maintenance records show the last transponder inspection was 
performed on September 1, 1993. The next inspection will be due no 
later than 





   ANSWER: September 30, 1995. 

   No person may use an ATC 
   transponder that is specified in the regulations unless within 
   the preceding 24 calendar months it has been tested and 
   found to comply with its operating specifications. Thus, if 
   the last inspection was performed on September 1, 1993, the 
   next inspection will be due no later than September 30, 1995. 

Completion of an annual inspection and the return of the aircraft to 
service should always be indicated by 





   ANSWER: an appropriate notation in the aircraft maintenance 
   records. 

   Completion of an annual inspection 
   and the return of the aircraft to service should always be 
   indicated by an appropriate notation in the aircraft's 
   maintenance records. 

To determine the expiration date of the last annual aircraft 
inspection, a person should refer to the 





   ANSWER: aircraft maintenance records. 

   After maintenance inspections have 
   been completed, maintenance personnel should make the 
   appropriate entries in the aircraft maintenance records or 
   logbooks. This is where the date of the last annual 
   inspection can be found. 

Which records or documents shall the owner or operator of an 
aircraft keep to show compliance with an applicable Airworthiness 
Directive? 





   ANSWER: Aircraft maintenance records. 

   Aircraft maintenance records must 
   show the current status of applicable airworthiness 
   directives (ADs) including, for each, the method of 
   compliance, the AD number, and revision date. If the AD 
   involves recurring action, the time and date when the next 
   action is required. 

The airworthiness of an aircraft can be determined by a preflight 
inspection and a 





   ANSWER: review of the maintenance records. 

   As pilot in command, you are 
   responsible for determining whether your aircraft is in 
   condition for safe flight. Only by conducting a preflight 
   inspection and a review of the maintenance records can you 
   determine whether all required maintenance has been 
   performed and, thus, whether the aircraft is airworthy. 

If an aircraft is involved in an accident which results in substantial 
damage to the aircraft, the nearest NTSB field office should be 
notified 





   ANSWER: immediately. 

   The NTSB must be notified 
   immediately and by the most expeditious means possible 
   when an aircraft accident or any of various listed incidents 
   occurs or when an aircraft is overdue and is believed to have 
   been in an accident. 

Which incident would necessitate an immediate notification to the 
nearest NTSB field office? 





   ANSWER: An in-flight fire. 

   The NTSB must be notified 
   immediately and by the most expeditious means possible 
   when an aircraft accident or any of various listed incidents 
   occurs or when an aircraft is overdue and believed to have 
   been in an accident. The following are considered incidents:

   1. Flight control system malfunction or failure;

   2. Inability of any required flight crewmember to perform 
   normal flight duties as a result of injury or illness;

   3. Failure of structural components of a turbine engine, 
   excluding compressor and turbine blades and vanes;

   4. In-flight fire; or

   5. Aircraft collision in flight. 

Which incident requires an immediate notification to the nearest 
NTSB field office? 





   ANSWER: Flight control system malfunction or failure. 

   The NTSB must be notified 
   immediately and by the most expeditious means possible 
   when an aircraft accident or any of various listed incidents 
   occurs or when an aircraft is overdue and believed to have 
   been in an accident. The following are considered incidents:

   1. Flight control system malfunction or failure;

   2. Inability of any required flight crewmember to perform 
   normal flight duties as a result of injury or illness;

   3. Failure of structural components of a turbine engine, 
   excluding compressor and turbine blades and vanes;

   4. In-flight fire; or

   5. Aircraft collision in flight. 

Which incident requires an immediate notification be made to the 
nearest NTSB field office? 





   ANSWER: An overdue aircraft that is believed to be involved in an 
   accident. 

   The NTSB must be notified 
   immediately and by the most expeditious means possible 
   when an aircraft is overdue and is believed to have been 
   involved in an accident. 

May aircraft wreckage be moved prior to the time the NTSB takes 
custody? 





   ANSWER: Yes, but only to protect the wreckage from further 
   damage. 

   Prior to the time the Board or its 
   authorized representative takes custody of aircraft wreckage, 
   mail, or cargo, such wreckage, mail, or cargo may not be 
   disturbed or moved except to the extent necessary:

   1. To remove persons injured or trapped;

   2. To protect the wreckage from further damage; or

   3. To protect the public from injury. 

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