Falcon Summer 1999

• Duncan Satellites Have Your Install Needs Covered
• Watch That Duct Rumble
• AlliedSignal SB 76-3067
• Falcon 900 STC
• Make Sure To Check The Cam Locks On Your Falcon 2000

Duncan Satellites Have Your Install Needs Covered

Duncan-Las Vegas, a full-service avionics shop located at McCarran Airport, joins a growing list of facilities that provide full installation service for avionics systems from a variety of manufacturers, including FMS, TCAS, GPWS, GPS, AFIS, RVSM upgrades, inflight telephones and AirShow.

Other Duncan satellite avionics facilities with installation capabilities include Van Nuys (VNY); Teterboro (TEB); Dallas (DAL); and Denver (SDN). Installation activity at Duncan satellite facilities is supported by the engineering experience of Duncan’s major aircraft maintenance and modification facilities in Lincoln, NE, and Battle Creek, MI. Duncan holds more than 400 STC’s and has a wide range of experience in avionics system installations and design.

Watch That Duct Rumble

During a test flight on a Falcon 900, Duncan technicians experienced a large duct rumble when the #3 throttle was pulled back to idle at altitude. It was actually a compressor stall. The engine had a 3072800- 5 EEC. Deceleration compressor stall is addressed by performing Allied-Signal SB TFE731-76-3056, revision 4, which installs a 3072800- 6 EEC. If you experience a duct rumble on deceleration at altitude, check your EEC numbers.

AlliedSignal SB 76-3067

AlliedSignal SB 76-3067, which allows for the installation of the N1 controlled Digital Electronic Engine Control (DEEC), has been revised to include the Falcon 10/100 and Falcon 50. STC ST01006CH-D for the Falcon 10 and STC ST01007CH-D for the Falcon 50 were issued May 7, 1999.

The current design uses an Electronic Engine Control (EEC) which uses N2 to control N1 (Thrust). This may result in N1 overshoot during transient power lever movement. The N1 DEEC is a direct interchangeable unit that reduces pilot workload and maintenance effort by controlling engine fan speed directly and automatically recording engine and flight parameters. Direct control of N1 allows automatic stable thrust settings during takeoff, climb and cruise. It also eliminates “Pilot Trimming,” required with the previous N2 controls EEC. The Engine Condition Trim Monitoring (ECTM) software, integrated into the DEEC, automatically records all data needed to track component life, fault detection & reporting, troubleshooting and parameter exceeding events.

For info, contact Doug Alleman in LNK at 800.228.4277 or contact Ken Kuchenreuther in BTL at 800.525.2376.

Falcon 900 STC

Duncan has received an STC for AlliedSignal’s Mark V EGPWS with display for 900’s. The “full-system capability” includes a display of EGPWS mapping data on pilot and copilot EHSI as well as the MFD. Also included are a manual display selection and “pop-up” auto display upon enunciation of a terrain warning. The display capability increases the “user friendliness” of the system and makes interpretation of the terrain display simple.

For info, contact Dan Buzz in LNK at 800.228.4277 or contact Tod Anderson in BTL at 800.525.2376.

Make Sure To Check The Cam Locks On Your Falcon 2000

On Falcon 2000 cabin door upper steps, Duncan technicians have been observing damage in the two cam locks where the panel for the oxygen bottle access is located. If the cam locks are not latched when the door is closed, the upper steps at the edge will be damaged. Make sure that flight crews and ground handlers take a quick look at these cam locks to make sure they are seated before closing the cabin door. If there is a need to access the oxygen bottle shut off valve, its access is through an oval access panel located under the carpet.

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