AVIATION OXYGEN MAINTENANCE

 

AIRCRAFT OXYGEN MAINTENANCE is mandated by the equipment manufacturers in coordination with the standards set by the various international aviation authorities.** Each component of the aircraft oxygen assembly must be inspected and then repaired or overhauled according to a specific schedule.

CREW OXYGEN MASKS

  • Constant Flow Masks—designed for use in non-pressurized factory aircraft and are approved for use to FL250.
  • Diluter Demand Masks—designed for use in pressurized factory aircraft, and are approved for use to FL400.
  • Pressure Demand Masks—designed for use in pressurized factory aircraft, and are approved for use to FL450.

Generally speaking, the overhaul of almost all diluter and pressure demand Crew Oxygen Masks are every six years.

As the older crew masks are phased out—Zodiac Series 893. 359, 10100, 10800 and BE Aero Series 1740, 1741, 1742 series— six years will be standard. All diluter and pressure demand Crew Oxygen Masks must be approved by the FAA and receive 8130 certification and assigned TSO C78A, C89A and or C99A

OXYGEN CYLINDER ASSEMBLY COMPONENTS

  • Tanks—either 3HT, 3AA, Kevlar or Aluminum
  • Pressure Regulator/valve assembly
  • Altitude Compensating Units (optional feature in several aircraft)

The 3HT steel tank has a service life of 25 years, with a hydrotest required every 3 years.

The 3AA steel tank has an unlimited service life, with a hydrotest required every 5 years.

The Kevlar composite (wrapped aluminum) has a service life of 15 years, with a hydrotest required every 5 years.

The Aluminum (flat-bottomed) tank has an unlimited service life, with a hydrotest required every five years.

The pressure regulator (and or altitude compensating unit) must be inspected at every hydrotest; and overhauled at the changeout of the tank or at hydrotest, if indicated by the inspection.

**FAA (USA), EASA (EU/JAA), ICAO (UN), CAA (UK, China), TC (Canada) etc

Aircraft Oxygen Maintenance (for SEO)

AIRCRAFT OXYGEN MAINTENANCE

AVIATION OXYGEN MAINTENANCE for PRESSURIZED factory civilian aircraft—with service ceilings above FL250—includes an FAA overhaul/repair/inspection schedule for all backup emergency depressurization oxygen systems—which consists of an oxygen cylinder assembly and diluter/pressure demand crew masks.

CIVILIAN AIRCRAFT OXYGEN TANKS—CYLINDERS—BOTTLES

are manufactured by a small handful of factories in the USA. They are sold almost exclusively*** to aircraft manufacturers which in turn place them with proprietary valves/regulators for installation as an assembly into each of their pressurized factory aircraft. Each aircraft produced has a specific assembly part number approved for use in that particular aircraft. That PN must be placed onto the Original Equipment List of every original Aircraft Owner's Manual. All aircraft oxygen assemblies in factory aircraft must have 8130 or EASA certificates, with few exceptions.

CIVILIAN AIRCRAFT OXYGEN CREW MASKS

for pressurized aircraft are also manufactured by a small handful of USA factories:

  • SAFRAN (AKA ZODIAC –AVOX—SCOTT—INTERTECHNIQUE) or
  • ROCKWELL (AKA BE AEROSPACE, PURITAN BENNETT, ZEP)
  • AEROX (AKA SHAW)

They are then sold to aircraft manufacturers for installation in their factory aircraft which must adhere to the maintenance schedules assigned by the OEMs. See also: diluter demand/pressure demand crew masks.

The maintenance schedules for both the masks and the oxygen cylinder assemblies are set by the product manufacturers—and adhered to by the aircraft manufacturers—in coordination with the various international aviation authorities. **

All aircraft manufacturers will be members of GAMA (General Aviation Manufacturer's Assn) i.e. BOEING—AIRBUS—BOMBARDIER—GULFSTREAM - BELL HELI—DEHAVILLAND -TEXTRON (CESSNA—PIPER—HAWKER) - MOONEY—PIAGGO—HONDAJET—SYBERJET—DASSAULT FALCON etc.

CAUTIONS: The inspection, repair and/or overhaul of aircraft oxygen equipment can ONLY be performed by specific FAA Licensed Repair Stations which will have the CMM (component maintenance manual) , equipment and license to 8130/EASA recertify specific components. Not all FAA Repair Stations hold these CMMs. The most common error made by owner/operators is to send out their assemblies for tank hydrotest to a shop not so licensed—with the common result being a blown valve. A "hydrotest facility DOES NOT HAVE the CMM, equipment or license to even HANDLE an aircraft oxygen regulator or valve.

EXCEPTIONS: 1) There are many older PIPER & CESSNA (TEXTRON) high performance aircraft—with service ceilings above FL250 to FL310—which are UNPRESSURIZED— have been grandfathered for use of constant flow crew masks. Most owner/operators of these aircraft have opted to upgrade to the diluter demand equipment currently required by the FAA for flights above FL250. 2) Factory aircraft with service ceilings to FL180 can use the efficient Oxysaver Cannulas for the best comfort and oxygen durations.

3) Factory aircraft with service ceilings to FL250 can use constant flow crew masks. Unless your constant flow crew masks have an 8130 certification, they are considered disposable with a service life of five years.

 

**FAA (USA), EASA (EU/JAA), ICAO (UN), CAA (UK, China), TC (Canada) etc

***oxygen tanks are also sold to qualified approved FAA facilities only— for production of PMA'd aftermarket replacement tanks.

AVIATION OXYGEN CYLINDER ASSEMBLY MAINTENANCE – FOR CYLINDERS AND REGULATORS

AVIATION OXYGEN CYLINDER ASSEMBLY MAINTENANCE – FOR CYLINDERS AND REGULATORS

THE FOLLOWING SERVICES ARE AVAILABLE FOR ZODIAC, PURITAN, SCOTT, AEROX AND BE AEROSPACE OXYGEN ASSEMBLY COMPONENTS—BOTH REGULATORS AND CYLINDERS.

  • REGULATOR INSPECTION/BENCH CHECK & RECERTIFICATION: $390 TAT 2-3 days.
  • REGULATOR REPAIR & RECERTIFICATION: $350.00 PLUS PARTS. TAT 3-5 DAYS.
  • REGULATOR OVERHAUL & RECERTIFICATION: $600.00 PLUS PARTS. TAT 3-5 days.
  • ASSEMBLY RECERTIFICATION WITH REPLACEMENT OF TIMED OUT CYLINDER: REGULATOR BENCH TEST,
  • REASSEMBLY & RECERTIFICATION - $450 PLUS COST OF CYLINDER. TAT 2-3 DAYS.
  • ASSEMBLY RECERTIFICATION WITH EXISTING CYLINDER NOT TIMED OUT: REGULATOR BENCH
  • CHECK, HYDROTEST OF CYLINDER, REASSEMBLY & RECERTIFICATION. $450 TAT THREE DAYS.
  • CYLINDER HYDROTEST ONLY $175.00—TAT 1-2 DAYS. IF YOU DO NOT HAVE THE PROPER EQUIPMENT
  • OR CMM INSTRUCTIONS TO REMOVE THE REGULATOR OR VALVE, DO NOT SELECT THIS OPTION—SEE
  • ABOVE OPTIONS FOR ASSEMBLY RECERTIFICATIONS.

PLEASE SEND THE PART NUMBERS OF THE COMPONENT(S) YOU WISH REPAIRED OR OVERHAULED TO INFO@AVIATIONOXYGEN.COM.

 

 

 

 

 

 

 

 

Diluter Demand Crew Masks (for SEO)

DILUTER DEMAND CREW MASKS:
Required equipment for any civilian factory aircraft with service ceilings above FL250 to FL 440—whether pressurized or unpressurized.**

DILUTER DEMAND CREW MASKS

are required equipment for any civilian factory aircraft with service ceilings above FL250 to FL 440—whether pressurized or unpressurized.**

PRESSURE DEMAND CREW MASKS

are required equipment for any pressurized civilian factory aircraft with service ceilings above FL450.

CONSTANT FLOW CREW MASKS

can be used for supplemental oxygen in any civilian factory aircraft with service ceilings below FL250.

OXYSAVER CANNULAS (constant flow) can be used for supplemental oxygen in any civilian factory aircraft with service ceilings below FL180. Enjoy up to eight times the duration from your tank—built-in or portable—over the use of ANY mask.

**EXCEPTIONS. Many EARLY UNPRESSURIZED civilian factory aircraft (Cessna & Piper) are still in service—with service ceilings to FL350— which have been Grandfathered for the continued use of their original Constant Flow Crew masks. A partial list of grandfathered aircraft is below. However, most if not all owner operators of these aircraft have upgraded their grandfathered equipment to the DILUTER DEMAND CREW MASKS. If you need assistance in replacing your constant flow equipment, contact info@aviationoxygen.com with images of the oxygen connector/mic—and aircraft make, model, service ceiling.

  • PIPER AEROSTAR PRESS TWIN PA60 - FL250
  • CESSNA CRUSADER T303 - FL250
  • PIPER MALIBU PA46 - FL250
  • PIPER SEMINOLE PA44 - FL250
  • PIPER TWIN COMANCHE PA39 - FL250
  • PIPER AZTEC PA41P - FL250
  • CESSNA TITAN 401 - FL260
  • PIPER CHIEFTAIN PA31-350 - FL260
  • PIPER PR NAVAJO PA31P - FL260
  • PIPER MOJAVE PA31P-350 - FL260
  • PIPER NAVAJO PA31 - FL260
  • CESSNA CENTURION P210 - FL270
  • PIPER CHEYENNE PA42 - FL290
  • PIPER TURBO PR CHEYENNE PA31T - FL290
  • PIPER CHEYENNE PA32 - FL290
  • CESSNA GOLDEN EAGLE 421 - FL300
  • CESSNA CARAVAN 406 - FL300
  • CESSNA CHANCELOR 414 - FL300
  • BEECH KING AIR - FL300
  • CESSNA SKYMASTER - FL330
  • CESSNA CONQUEST 425 - FL350
  • CESSNA CONQUEST II 435 - FL350
  • CESSNA CONQUEST II 441 - FL35

NOTE: The FAA is currently studying whether crew masks—for ALL aircraft with service ceilings above FL250 - should also be SMOKE-VENTING TSOC99A. If you are unclear about whether or not your existing diluter/pressure demand equipment meets this TSO, please send the PN of your crew masks to info@aviationoxygen.com. [This is already a requirement for Canadian pressurized aircraft.]

Aircraft Masks Request for Service

Aircraft Oxygen Maintenance - Request for Service - Aviation Oxygen Masks

THE FOLLOWING SERVICES ARE AVAILABLE FOR EROS & BE AEROSPACE CREW MASKS WITH INFLATABLE HARNESS

  • OVERHAUL/RECERTIFICATION. $1300 plus parts. TAT OF 4-8 DAYS. With each successive overhaul different components must be replaced—whether defective or not.
  • REPAIR/RECERTIFICATION. Repair costs are labor/parts only. TAT OF 4-8 DAYS. Attach all Squawks.
  • BENCH TEST/INSPECTION & RECERTIFICATION. $450. TAT OF 3-4 DAYS. Should your mask fail the test and/or the Overhaul History so indicates, any required repair or overhaul will be noted on the Work Estimate.
  • AOG SCHEDULING—IF AVAILABLE— IS $390 PER MASK.

PLEASE SEND THE PART NUMBERS OF THE COMPONENT(S) YOU WISH REPAIRED OR OVERHAULED TO INFO@AVIATIONOXYGEN.COM.

 

 

 

 

 

 

 

 

 

 

 

 

 

Our Store Location

Reid Hillview Airport

2635 Cunningham Avenue
San Jose, CA 95148
877.634.4744 (USA)
408.923.2625 (INT'L)
408.929.3726 (FAX)

Email Us

SE HABLA ESPAÑOL

Worldwide Shipping

flags

We ship aviation oxygen supplies worldwide.