Hawker Spring 2003

• Keep Track Of Service Bulletins & Modifications
• Hawker 700 Inspections
• Service Bulletin 32-3519
• Service Bulletin 32-3495
• Emergency Batteries (Changing Nicad to Lead-Acid)

Keep Track Of Service Bulletins & Modifications

— Roy Olsen

One of the most important books to keep up-to-date along with your logbook is the mod record book. Keeping track of what SBs and Modifications have been done to your aircraft is important.

Whenever SBs or Modifications are performed, they should be entered in to the airframe logbook and the mod record book. This is double work but trying to find out if a SB or modification has been done is much faster if it has been entered in the mod record book. Remember that some modifications change parts and add or modify systems. When ordering some parts or troubleshooting different systems, knowing the mod status is important; it can save you both time and money.

Hawker 700 Inspections

— Dick Hyde

Is your generator load sharing beginning to split? Is one engine starting slower? Hawker 700 Inspection "G" or 48 month inspection calls out to dismantle and inspect earth stations *16 through *19. Earth stations *16 and *17 are the ground leads from the generators and will cause the generator parallel and slow start problems. A digital VOM will not give a fault indication, this inspection needs to be a visual inspection.

Service Bulletin 32-3519

— Roy Olsen

When complying with SB 32- 3519 (replacing the bearing block assemblies on the nose landing gear on the 800 series Hawker), remember that there is a structural inspection 530004 that states whenever the nose gear and drag stay are removed, the mounting bracket bolts should be checked for tightness. Normally this is done when the landing gear gets removed for overhaul. If you choose to do it yourself, check to see if any of the bolts are loose; the floor in the cockpit will have to be opened to gain access to the nuts. This will add extra man-hours and could add extra down time.

Service Bulletin 32-3495

— Roy Olsen

This SB calls for the installation of the new Protective Breathing Equipment (PBE). If you are operating an 800 or 800XP make sure to get your PBE ordered and installed at an Authorized Service Center before the end of the warranty period, this way you will not have to pay for the PBE or its installation.

The SB currently allows for three spots in the aircraft for installation; however, Raytheon recently came out with a Communiqué #35-04 allowing for a fourth spot.

Emergency Batteries (Changing Nicad to Lead-Acid)

— Roy Olsen

Many operators do not know that Raytheon has an STC for removing the #3, #4 and #5 Nicad emergency batteries and for installing lead acid batteries for the 800 series Hawker.

The STC removes the CA 126 Nicad batteries and installs three RG-126 lead acid batteries. What's nice about the lead acid batteries are the inspection times, and price of the batteries. After the installation of the batteries, the first inspection is due in 12 months or 2000 hours of operation, whichever occurs first. The next inspection would be due after 12 months or 1000 hours of operation. And according to the maintenance manual for these batteries the inspection schedule may be adjusted after the useful battery life is established in a particular operation.

The RG-126 batteries are taller than the Nicads, so the battery hold down has to be changed and the battery ramp that the batteries are mounted under must be modified in order to be higher. After this is accomplished, the only thing left is to install the batteries as there is nothing in the electrical system that has to be changed.

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