HelicopterMaintenanceHelpDesk

We look at the hub cap support gasket on the Airbus EC135 helicopter and the fact that it expires.

I found a main rotor blade trim tab new in the manufacturers packaging that had expired. How does an aluminum trim tab expire? Watch our for parts that you wouldn't think expire, expiring.

A reminder to check the main rotor bonding cables on the Airbus EC135 on your daily preflight inspection.

An Air Medical EMS helicopter lands at a hospital landing pad to drop off a patient. Seen from a little boy watching a helicopter land for the first time.

In this 12 minutes we go through the Auto to Manual to Auto Mode Response check. That is 12 minutes of your life that you will never get back, but is worth watching. This response check is done during the 200 hour engine inspection and other inspections. We review the engine maintenance manual procedures for the Pratt and Whitney PWC 206B2 engines installed on an Airbus EC135, H135 helicopter. This check is not complicated but there are a couple things to watch out for: Specifically, the engine maintenance manual says to set the NG to 85%. NG is N1, look at the N1 displayed on the FLI. Another thing that needs clarification is that the engine maintenance manual tells you to set the engine to "Flight Idle." Don't confuse this with "IDLE" for the engine selector switch. Pratt wants the aircraft to be at 100% Nr (rotor speed), so set the engine switch to "FLIGHT," and turn off the Cat A or High NR. With the recent revision to the EMM (engine maintenance manual), the procedure now calls for BOTH engines to be at flight setting during this check. We review why this was changed from "have all other engines in shut down state." Also, do not move the collective too much when the Selector switch is in Manual Mode. And DO NOT twist the throttle when in Manual Mode during this check. We also go through why Pratt wants us to do this check in the first place. This is because dust clogs up the P3 air lines going to the Fuel Management Manual (FMM), and if it gets really bad, dust particles clog up the FMM's P3 input. If the aircraft flies through dusty areas or lands near grassy areas (if you see grass in the intake screen), then the P3 air to the #8 Bearing seal housing and the FMM could be clogged. During the 200 hour engine inspection, we check for debris and airflow at the P3 fitting. If there is debris or there is insufficient air flow then the #8 bearing seal housing needs to be cleaned due to a build up of debris inside of the housing. If you see a little oil leaking out from the engine output drive seal then there is a good chance that the housing is filled with debris and needs to be cleaned. I hope you found value in this video. Consider sharing this video with others who might find value watching this as well. Regards, -Helicopter Maintenance Help Desk #ec135 #airbushelicopters #pwc #aircraftmaintenance #helicoptermaintenance #prattandwhitney

In this 6 minute video we look at how to update the terrain database for the Honeywell EGPWS MK XXI ground proximity warning system installed on many aircraft. This video shows how to complete the update on an Airbus EC135 helicopter. The main thing to remember is that you have to wait nearly 30 minutes with the aircraft avionics power on while the EGPWS re-validates the new data on the new card. You will not see anything or hear anything happening during this time. You will know that the update has been validated when press the "self-test" button in the cockpit and you hear "EGPWS system okay..." in the headset. Here is a link to a copy of the EGPWS MK XXI Pilot's Guide on my shared Google drive: https://drive.google.com/file/d/14n1-xP5UF-FAT5x--e18uCXUVSCl7CIY/view?usp=sharing Thank you for watching. I hope you found value in this video. Consider sharing these videos to help other maintenance crews out there. Regards, -Helicopter Maintenance Help Desk

In this 8 minute video we look at the 7 year/3 year collective shaft inspection. We review the inspection requirement, when to inspect, and how to inspect the collective shaft. Then we show an inspection with a quality borescope. This is on all versions and models of the Airbus EC 135 / H135 helicopters. If you have any questions, reach out to your maintenance staff for support or Airbus Helicopter tech support. This is not a difficult job as long as you have a quality borescope, you need a borescope that fits inside of the tiny hole in the collective shaft. Thank you for watching. I hope you found value in this video. Consider sharing these videos to help other maintenance crews out there. Regards, -Helicopter Maintenance Help Desk

In this 13 minute video we look at the the pilot door hinge bearings and the clamshell door hinge bearings. They are the same. We review how to replace the bearings with the claw ring. Then we dig in to where to find the part numbers and review the maintenance manual and MTC. These are on the Airbus EC 135 and EC 145 helicopters. This is an easy job. If your machine has been flying for a long time and you have not looked at this ever, then take a quick look. In the EMS field these doors are used every day even if there are no flights. This is a highly used item and if not inspected, will wear out in a few years. Thank you for watching. I hope you found value in this video. Consider sharing these videos to help the other maintenance crew out there. Regards, -Helicopter Maintenance Help Desk