SECTION B

 

Maintenance, Inspection & Repair Instructions

 

For questions, comments or problems with this installation please contact Mtn View Aviation, PO Box 31, Hubbard, OR 97032, Ph. (503) 981-4550, Fax (503) 981-3262, email info@mtnviewaviation.com.  Please contact Mtn View Aviation for any in service problems or difficulties with this product.

 

ATA  Chapter 05          Time Limits/Maintenance Checks

 

05-00              General

 

The Door Steward™ installation should be inspected during scheduled airframe periodic inspections that cover the door and door frame areas.

 

05-20              Scheduled Maintenance

 

Inspection of the installation will consist of the following:

1.         Security of attachment of both airframe and door brackets to the associated structure.

2.         Security of the gas spring attachment to the ball studs.

3.         Security of the threaded ball stud to the airframe and door brackets.

4.         Smooth operation of the gas spring.  Inspect for evidence of end seal leakage or loss of gas spring pressure. 

 

ATA Chapter 52           Doors

 

                        52-00              General

 

The Door Steward™ is a product improvement installation that greatly improves the operation of the aircraft doors.  The installation consists of a gas spring attached to brackets mounted on the door and the airframe.  When the door is unlatched the gas spring gently but firmly opens the door to the full open position.  The gas spring while in the open position protects the aircraft and occupants from unexpected openings and closings by providing resistance to considerably higher wind gusts and prop wash than the original stops.  In addition, the gas spring is extremely simple and reliable.  The weight of each door installation is 1.0 lbs.  Closing the door compresses the gas spring.  The gas spring can easily be removed from its brackets to facilitate removal of the aircraft door, replacement of a defective gas spring or to conduct other maintenance.

 

                       

 

1.         Removal of the gas spring from attachment ball studs

 

Locate the wire safety clip (P/N MVA-9002) installed in the end fitting.  It is installed in a set of holes on one side of the end fitting parallel to the gas spring and snapped around the end fitting.  Remove the safety clip.  Grip the gas spring at the end fitting and pull it directly off of the ball stud.  Repeat for the opposite end.

 

2.         Installation of the gas spring onto the attachment ball studs.

 

Insure the safety clips are not installed in the end fitting.  Push the end fitting of the gas spring onto the ball stud until it snaps on.  Locate the set of holes on one side of the end fitting and install the safety clip from inboard toward outboard of the gas spring and then snap the safety clip around the end fitting.  One end may be easier to do first than the other.

 

3.         Loose ball stud in either the airframe or door bracket.

 

Torque the locking nut on the door bracket (1/4”-20) to 40-50 in. lbs. and the airframe locking nut (5/16”-18) to 80-90 in. lbs.   If still loose, determine if the bracket hole is worn or the threaded ball stud is worn.  Replace any worn parts with new.

 

4.         Defective gas spring.

 

A gas spring which is has lost pressure is not repairable.  When a gas spring that has lost pressure no longer opens the door satisfactorily, replace the defective gas spring with a new one with the same part number as removed.  Gas spring end fittings which are damaged or worn can be replaced with new.  Refer to the Parts List in SECTION C for the correct part number.