VAPOR CYCLE FREON AIR-CONDITIONING CHAPTER 05 - TIME LIMITS/INSPECTIONS LIST OF EFFECTIVE PAGES. List of Effective Pages 1 7 June 2007

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1 CHAPTER 05 - TIME LIMITS/INSPECTIONS LIST OF EFFECTIVE PAGES SECTION PAGE DATE List of Effective Pages 1 7 June 2007 Table of Contents and June LIST OF REVISIONS REVISION DATE IR A 7 June 2007 NOTE: THIS MANUAL WILL DESCRIBE ONLY THE MBB-BK117 C-2 SYSTEM, 117MM-100-2, AIRCONDITIONER. 05- EFFECTIVE PAGES Page 1 7 June 2007

2 CHAPTER 05 - TIME LIMITS/INSPECTIONS TABLE OF CONTENTS Title Section Page Effectivity GENERAL - TIME LIMITS/INSPECTIONS Time Limits/Inspections - General All 6-2 Scheduled Checks & Inspections - General All 6-3 Further Scheduled Measures - General All 6-4 Unscheduled Inspections - General All 6-5 Ground Run & Functional Test Flight - General All 6-6 Information on Time Limits - General All 6-7 Supporting Documentation All TIME LIMITS - SCHEDULED INSPECTIONS Preflight Check - Time Limits All 6-2 Complementary Checks/Inspection - Time Limits All Month/100Fh - Time Limits All 6-4 Intermediate Inspection- Time Limits All 6-5 Blank All 6-6 Blank All 05 - CONTENTS Page 1

3 Title Section Page Effectivity 6-7 Conditional Inspections after Operational Incidents Time Limits All 6-8 Conditional Inspections after Maintenance Activity- Time Limits All TIME LIMITS - LUBRICATION Blank All TIME LIMITS - OVERHAULS Overhauls - Time Limits All TIME LIMITS - STORAGE General All 05-CONTENTS Page 2

4 CHECKS /INSPECTIONS Preflight Check All 6-2 Complementary Check/Inspection every 50FH All Month/100 Fh - Inspection All 6-4 Intermediate 24 Month/600 Fh - Inspection All NOTE: THIS MANUAL WILL DESCRIBE ONLY THE MBB-BK117 C-2 SYSTEM, 117MM AIR-CONDITIONER. 05-CONTENTS Page 3

5 6--1 Time Limits/Inspectons - General EQUIPMENT MAINTENANCE MANUAL GENERAL - TIME LIMITS/INSPECTIONS A. The checks, oil and lubricant changes, inspections and overhauls specified in Chapter 05 must be accomplished no later than the time limits specified in Sections , , and to ensure Continued Airworthiness of the Helicopter. B. This chapter specifies certain actions to ensure the serviceability of the equipment. For the purposes of this section, "checks" can be accomplished by pilots or technicians, and "inspections" must be accomplished by maintenance technicians. All personnel shall have this and other documents available and shall be appropriately certified and or trained to accomplish the tasks. 6-2 Scheduled Checks and Inspections - General A. The scheduled checks and inspections listed in this section are to be accomplished latest on reaching corresponding operating time of helicopter. B. If the operating times of parts or components differ from those of the helicopter, then the operating times of these parts or components are applicable. C. Inspection points of scheduled checks and inspections may be performed earlier. For this make sure that the specified time limits are not exceeded for those measures accomplished in advance. 6-3 Further Scheduled Measures - General A. Section contains the time limits for lubricant change. B. Section contains the time limits for overhaul-components. Overhauls are to be performed by the STC holder. C. Section contains the time limits for storage of parts and components Page 601

6 6-4 Unscheduled Inspection - General EQUIPMENT MAINTENANCE MANUAL A. Section , 6-7 contains the Conditional Inspections to be performed after specific operational incidents either prior to the next flight or after specified time intervals. These Conditional Inspections ensure that airworthiness will be maintained between specific maintenance activities. B. Section , 6-8 contains the Conditional Inspections that are to be performed as a result of specific maintenance activities. 6-5 Ground Run and Functional Check Flight - General A. Section contains the procedures for ground run and functional check flight for models EC135 with this equipment installed. These serve to test the function and performance of the helicopter systems and equipment. 6-6 Information on Time Limits - General A. All time limits requiring maintenance procedures are contained in Sections , , and B. Time limits are defined as follows: (1) If time limits are expressed in flight hours (Fh) they generally apply to the flight hours of the helicopter. If the flight hours are related to parts and components this is explicitly stated. Flight hours are defined as the time between takeoff and landing of the helicopter. (2) If time limits are expressed as calendar time, they generally apply to the helicopter. If the calendar time is related to parts and components this is explicitly stated. Calendar time is the interval between mandatory checks, inspections and overhauls expressed in months (mo) or years (y) Page 602

7 C. Exceeding of time limits is defined as follows: (1) Time limits can not be exceeded. If time limits are inadvertently exceeded, the over-the-limit times should be subtracted from the next check or inspection time interval. 6-7 Support Documentation A. Below is listed additional documentation referenced in this manual that is required to support this equipment. Drawing Effectivity Title 117MM-100 (-2 Install) MBB-BK117C-2 Air Conditioning Overview Hose FAB/Crimp Instructions Page 603

8 TIME LIMITS - SCHEDULED INSPECTIONS 6-1 Preflight Check - Time Limits A. The Preflight Check is to be performed prior to the first flight of the day. B. The Preflight Check is to be accomplished according to , or Approved Flight Manual Supplement. 6-2 Complementary Checks /Inspections - Time Limits NOTE: Different time intervals apply to the complementary checks. A. Every 50 flight hours a complementary check is to be performed according to ,6-2. The time limit of 50 flight hours may not be exceeded. If performed at the same due time, the Complementary Check every 50 Fh is done in addition to any other checks due Page 601

9 Month/100 Fh Inspection - Time Limit A. A 12-Month/100 Fh Inspection is to be performed according to section : - Each 12 months OR 100 Fh of operation whichever occurs first. The time limit of 100 flight hours may be exceeded by 10 Fh and the 12 Mo inspection by 1 month for scheduling however the exceedence is not cumulative with respect to the next inspection due. 6-4 Intermediate Inspection - Time Limits 6-5 Blank 6-6 Blank A. An Intermediate Inspection is to be performed according to section , 6-4: - Each 24 months OR 600 Fh of operation since put into operation The time limit of 600 flight hours may be exceeded by 60 Fh and the 24 Mo inspection by 6 Mo for scheduling however the exceedence is not cumulative with respect to the next inspection due. B. If performed at the same due time, the Intermediate Inspection is done in addition to any other inspections. 6-7 Conditional Inspections after Operational Incidents - Time Limits A. After any operational incident involving hard landings, sudden stoppage of the drive train or water immersion, the system must not be operated unless all requirements, inspections and overhauls are performed in accordance with Chapter of this EMM. B. For lightning strikes, either in flight or rotors not in motion, a complete system operational check shall be performed and a thorough and searching inspection for arcing and component damage. C. Notification of incident must be made to the STC holder for additional requirements Page June 2007

10 6-8 Conditional Inspections after Maintenance Activity - Time Limits A. None Page 603

11 TIME LIMITS - LUBRICATION 6-1 BLANK Page 601

12 6-1 Overhauls - Time Limits TIME LIMITS - OVERHAULS A. After Time Between Overhaul (TBO) of a component has expired, the component must be removed and replaced by a new or overhauled component. A scheduled inspection has no influence on the TBO of a component. B. The given time limits may not be exceeded. C. The TBO for specific components is given below. Component Part Number TBO NONE Page 601

13 TIME LIMITS - STORAGE 9-1 General Procedure A. All components should be stored in a manor consistent with normal care and storage practices for other aircraft components Page 901

14 CHECKS 6-1 Preflight Check - System A. The preflight check shall be accomplished in accordance with this guide by a qualified technician or pilot. The preflight check is not a detailed mechanical inspection, but essentially a visual check of the helicopter for correct condition. The check shall be completed before the first flight of the day. When unusual local conditions dictate, the extent and/or frequency of this check shall be increased as necessary to promote safe operation. B. System Check: Steps: The exterior check is laid out as walk-around check, starting forward right at the pilot's door, proceeding clockwise to the tail boom, to the left hand side (including the upper and lower areas of the helicopter) and is completed at the helicopter nose area. 1) Check the security of mounting of the compressor and mount through the upper transmission cowl. 2) Check security of the compressor drive belt. 3) Visually inspect evaporator fan scoop. 4) Check the security of the condenser through the battery access door. 5) Ensure that when the main rotor is turned that no rotation of the compressor driven plate. 6) Inspect air outlets for condition and operation Page 601

15 6-2 Complementary Check/Inspection every 50 Fh. A. This check is to be accomplished by a qualified technician or pilot. B. In conjunction with this check, perform a complete pre-flight in accordance with 6-1 of this section. STEPS; Month/100 Fh 1) Remove the upper transmission cowling and engine cowling and check the compressor and Evaporator Installation 2) Check mounting of the condenser unit. 3) Check the condition and tensioning of the Belt. -Tension to checked IAW chapter , 4-4 4) Visually check the security of the compressor and mount. 5) Reinstall cowling and return aircraft to service making appropriate entries in the aircraft maintenance log. A. This check is to be performed by a qualified technician. B. In conjunction with this inspection a complete preflight and 50 hour complimentary check is to be accomplished in accordance with this Chapter Section 6-1 and Page 602

16 Steps: 1) Perform an operational check of the system in accordance with the Approved Flight Manual Supplement or Chapter Part II ) Perform the functional test Part II in Chapter , ) Inspect evaporator and Compressor for security of attachment. 4) Check visible portions for cleanliness, security and evidence of leaks. 5) Correct any discrepancies noted. 6) Reinstall cowlings and panels and return aircraft to service making appropriate entries in aircraft log books. 6-4 Intermediate Inspection 24 Month/600 Fh A. This check is to be accomplished by a qualified technician. B. In conjunction with this inspection perform the inspections contained in Sections 6-1, 6-2, and 6-3 respectively. Steps: 1) Remove all interior panels and floor panels to gain access to refrigerant lines. 2) Inspect lines for chaffing, leaks and security. 3) Inspect wiring for chafing and security Page 603

17 4) Remove cover of air conditioner electrical box and inspect for condition. 5) On the operational test, manually trip the high and low pressure switches, one at a time to verify that the compressor clutch circuit breaker trips. Note: Move air conditioner switch to "off" prior to resetting breaker. 6) Check time life limits of chapter Replace components as necessary. 7) Check overhaul time limits in Section Replace components as necessary. 8) Reinstall all covers and cowlings. 9) Return aircraft to service and make appropriate entries in aircraft log books Page 604