ABS Fly-In Savannah, Georgia, May 16-19 See Page 3 - American ...

www.bonanza.orgFlaps Won’t RunFred Moskol, Madison, WisconsinThe flaps on my A36 (E-2453) will go to approach butQ: not from approach to full. They will go to full if setdirectly from the flaps up position.A:Your flap system has four limit switches. Oneis armed when flaps are UP and you select APP,another when flaps are up or APP and you select DWN,a third when flaps are fully DWN and you select APP,and the last when flaps are DWN or APP and you selectflaps UP. When the appropriate switch is engaged by theflap, power is interrupted to the flap motor to stop theflap in place.I suspect the switch that moves the flaps from DWN toAPP is out of alignment or broken, and is engaged by theflap when the flap is in the APP position. It remains engagedwhen the flaps are in APP and prevents power from movingthe flaps from that point. One way to check would be to putthe flaps fully DWN, then attempt to retract them to the APPposition. I suspect the flaps will run all the way UP and theflap motor may not stop running. If that happens, pull theFLAP MOTOR circuit breaker, move the flap handle to theUP position, and reset the breaker.In any event, the flap limit switches are the likely culprit.Have your mechanic start there. —TTQ:Oxygen Bottle RecertificationJustin Strauss, Cranston, Rhode IslandDo you have any maintenance info on taking theB36TC’s installed oxygen system apart, and reinstallingthe same. The oxygen bottles must be recertified everyfive years.I’ve emailed you the appropriate page from the main-A1: tenance manual that covers the B36TC. Pay close attentionto the “Warning” on the page referring to safety, whenhandling oxygen and high pressure vessels. As this is not onthe list of owner/pilot performed maintenance, it will needto be completed or supervised by an A&P mechanic. —AMPlease note the testing period for aviation bottlesA2: from the maintenance manual.N. Oxygen Cylinder RetestingOxygen cylinders used in the airplanes are the light weighttype, stamped 3 HT on a plate on the side of each cylinder.Each oxygen cylinder must be hydrostatically tested everythree years and the test date stamped on the cylinder.The cylinders have a service life of 24 years and/or 4,380pressurizations, whichever occurs first. When the service lifeof the cylinder is complete, the cylinder must be discarded.—BRQ:Nose Gear Down TensionTom Roman, Mandeville, LouisianaThe ABS Service Clinic found my H35’s nose geardown tension to be 35lbs. Should I replace P/N 35-825188, or increase tension with washers? Total time on thispart (never replaced) is 6035 hours.A:I would review the aircraft logs and if the threerod end bearings on the nose gear have not beenreplaced in the last 2000 hours, I would replace them alongwith the spring and shear pin. Also replace the aft rodattach bolt if you change the rod ends.The following parts will be required if you complete therod end replacement also:2ea ADNE5-323 rod ends1ea HML6rod end35-825188 tension springAN 26-28/M boltMS20392-2C25 shear pinAfter installation, make sure that your up tension isbetween 30-35 pounds when nose gear is pulled downat the tow pin. If rod ends have been replaced in the last2000 operating hours, I would replace the spring 35-825188and the shear pin MS20392-2C25 only. —BRVolume 13 • Number 2 AMERICAN BONANZA SOCIETY 69