airbus

May 19, 2019 | Original article
Added by: kerimhhalitoglu | useradded
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25-11-00 PB 001 CONF 00  -  COCKPIT SEATS - DESCRIPTION AND OPERATION 1. General A. Cockpit Seats (Ref. Fig. Cockpit Seats SHEET 1)    The cockpit is equipped with four seats: · a Captain seat · a First Officer seat · a Third Occupant seat · a Fourth Occupant seat (folding type seat). (1) Captain and First Officer Seats.   The Captain and First Officer seats are symmetrical and have the same functions. (2) Third Occupant Seat.   The Third Occupant seat is identical to the first officer's as regards structure and shape but includes some differences (see Para.5. B.). (3) Fourth Occupant Seat.   The Fourth Occupant seat is of the folding type and has no adjustment. 2. Component Location A. Cockpit Seats ** ON A/C 201-250, 252-300, 351-364, 366-700, 702-800 (Ref. Fig. Cockpit Seats - Component Location SHEET 1)  Captain and First Officer Seats. The Captain and First Officer seats are equidistant from the aircraft centerline: y +/- 530 mm (y +/- 20.88 in.). The base of the seats is attached to the floor by means of eight hex head screws. Third Occupant Seat. The Third Occupant seat stands apart from the aircraft centerline: y - 86 mm (y - 3.39 in.) but can move to y - 35 mm (y - 1.38 in.). When aligned with the aircraft centerline and in the extreme forward position the seat can take three additional positions (counterclockwise): 30, 45 or 68 degrees. The seat base is fitted on a rotating star. This star is attached to the floor by means of eight hex head screws. Fourth Occupant Seat. The Fourth Occupant seat forms an angle of 22.8 degrees with respect to the cockpit aft partition. The base of the seat is attached to the floor by means of four hex head screws located inside the life vest compartment. ** ON A/C 801-850 (Ref. Fig. Cockpit Seats - Component Location SHEET 1)  Captain and First Officer Seats. The Captain and First Officer seats are equidistant from the aircraft centerline: y +/- 530 mm (y +/- 20.88 in.). The base of the seats is attached to the floor by means of eight hex head screws. Third Occupant Seat. The Third Occupant seat stands apart from the aircraft centerline: y - 86 mm (y - 3.39 in.) but can move to y - 35 mm (y - 1.38 in.). When aligned with the aircraft centerline and in the extreme forward position the seat can take three additional positions (counterclockwise): 30, 45 or 68 degrees. The seat base is fitted on a rotating star. This star is attached to the floor by means of eight hex head screws. Fourth Occupant Seat. The Fourth Occupant seat is a folding seat. It is installed in the rear right zone of the cockpit. It forms an angle of 22.8° with respect to the aft partition. It is inclined backwards by 4.42°. The base of the seat is attached to the floor by means of four hex head screws. ** ON A/C ALL FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS DOOR ATA REF   3MS  SEAT-CAPTAIN 211 25-11-51   4MS  SEAT-F/O 212 25-11-51   5000MS  SEAT-THIRD OCCUPANT 210 25-10-00   5001MS  SEAT-FOURTH OCCUPANT 212 25-11-42 3. Power Supply A. Circuit Breakers (Ref. Fig. Captain/First Officer Seats - Power Supply/Interface SHEET 1)    The four lamps used for floor lighting and located under the seat pan are supplied with 28VDC (Captain and First Officer seats only). (See ATA Chapter 33-12-00).   The Captain and First Officer seats are equipped with electrical controls for the horizontal and vertical travels. Each gear motor is supplied with three-phase 115VAC. The system is supplied through these circuit breakers:     FIN PANEL LOCA TION DESIGNATION BUS AMM ATA REF. P. BLOCK 001 1MS1 721VU A5 COCKPIT SEATS/CTL/CAPT 101XP 25-11-00 1MS2 722VU B39 COCKPIT SEATS/CTL/F/O 202XP 25-11-00   4. Interface (Ref. Fig. Captain/First Officer Seats - Power Supply/Interface SHEET 1)    The Captain and First Officer seats have an interface with the following systems: · 24-58-00 (XP) - Electrical Power (AC) · 33-12-00 (LE) - General Illumination. 5. Component Description A. Captain and First Officer Seats (1) General The Captain and First Officer seats are symmetrical and have the same functions. They are designed so as to offer a good accessibility to all system controls in all flight phases, with a maximum of comfort.   The electrical controls enable vertical and horizontal travels of the seat. The mechanical controls enable adjustment of the seat and override the electrical controls.   The seat-backrest adjustment control is only mechanical.   In the extreme aft position, the seat can move laterally towards the consoles. This increases the space between the pedestal and the seat and thus facilitates access to the seat. This is the stowed position of the seat. (2) Description (Ref. Fig. Captain/First Officer Seat - Front View SHEET 1)  (Ref. Fig. Captain/First Officer Seat - Back View SHEET 1)    The seat consists of: · a telescopic column · a seating assy · a backrest · armrests · a headrest (if installed). (a) Telescopic column The telescopic column ensures the vertical travel of the seat.   The seat column is made of three sections: · the fixed section which is the seat base · a free section · a moving section which supports the seat pan.   The seat base is fixed to the floor by means of eight hex head screws. The supply wire is attached to the seat base and connected to the seat pan. (b) Seating assy The seating assy consists of the seat pan and the cushion. 1 Seat pan   The seat pan is a metallic structure mounted on the telescopic column. The electrical and mechanical controls are located on the pedestal side of the seat pan.   Four lamps are located under the seat pan (one in each angle) and enable lighting of the floor. The lighting control is located on panels 513 and 514VU   Footrests are provided on the aft side of the seat pan for the occupants who are seated in the aft area of the cockpit. 2 Cushion   The cushion has an ergonomic design to provide good support of the body and ensure good pressure distribution.   The upper face plane of the seat pan cushion forms an angle of approximately 10° with the horizontal plane, to prevent the occupant from slipping down.   When an occupant of 90 kg weight is seated, the seat-pan cushion foam reaches its final shape within 5 minutes. (c) The backrest The backrest is designed to offer a maximum of comfort to the occupant and provide good lateral support of the body. All controls are of easy access and enable the occupant to adjust the backrest at the desired position.   The manual controls are used to adjust the position of the backrest and lumbar rest.   The lumbar rest integral with the backrest is adjustable in depth and in the vertical direction. It enables adaptation of the backrest shape to the morphology of the occupant.   A life vest is stowed on the aft side of the backrest in a compartment accessible through a hinged door, the door is held closed by means of two magnets. (d) The armrests 1 Inboard armrests (Ref. Fig. Captain/First Officer Seat - Front View SHEET 1)    The inboard armrests (on pedestal side) are symmetrical for the Captain and First Officer seats.   The armrest is hinged to the backrest and can thus be raised vertically and stowed behind the backrest. Angular adjustment is possible by means of a button located at the forward end of the armrest. 2 Side stick armrests (Ref. Fig. Sidestick Armrest SHEET 1)    The side stick armrests (on side stick side) are symmetrical for the Captain and First Officer.   The armrest is attached to the seat pan and is independent from the backrest movements. It can be folded back to a vertical position to enable easy access to the crew briefcase or the console.   The height and tilt angle of the armrest table can be adjusted so as to enable the Captain to optimize rest of the arm when he operates the sidestick.   The armrest is adjusted by means of two knobs located on the forward and outboard sides of the armrest. Two position indicators enable identification of the selected position.   A free wheel, located on the front of the table, serves to avoid interference between the armrest and the lateral console when the seat is moved forwards with the table fully inclined.   In this configuration the armrest is guided on the lifting ramp so as to avoid contact with the side console. (e) Safety harness (Ref. Fig. Safety Harness SHEET 1)    The safety harness includes: · a shoulder harness: 2 straps · an abdominal belt: 2 straps · a fifth strap.   The straps can be clicked to the buckle in any order. The buckle is attached to the abdominal belt strap located on the side stick side.   When you turn the unlocking control a quarter turn, either clockwise or counterclockwise,the four straps are released. When you push the control located on the top of the buckle, only the shoulder harness is released.   The shoulder harness is fitted on an inertia reel. A control lever, located either on the lateral part of the backrest or behind the backrest (on the pedestal side) and easily accessible serves to lock the inertia reel. (Ref. Fig. Captain/First Officer Seat - Back View SHEET 1)    The control lever of the shoulder harness has two positions which are: · LOCK (down position) · UNLOCK (up position).   It is possible to lock the mechanism to immobilize the seat occupant if he is taken ill (or for other reasons); this is therefore an emergency procedure.   The fifth strap maintains the buckle at the waist Adjustment enables adaptation of this strap to the morphology of the occupant. (f) Headrest (if installed) The headrest has two possibilities of adjustment: · in rotation · in height.