Topics in Category: MD-11 - Rotate.Aero https://rotate.aero Wed, 15 Aug 2018 18:29:25 +0000 MYOB /media/kunena/images/icons/rss.png Topics in Category: MD-11 - Rotate.Aero en-gb ATA 27-60, Spoiler Position Indication - by: Mike Forti https://rotate.aero/forum/ata27-flightcontrols-md11/154-ata-27-60-spoiler-position-indication#437 https://rotate.aero/forum/ata27-flightcontrols-md11/154-ata-27-60-spoiler-position-indication#437 ATA 27 Flight Controls Thu, 19 Oct 2017 21:39:31 +0000 Bus Tie Contactor - by: Mike Forti https://rotate.aero/forum/ata24-md11/226-bus-tie-contactor#436 https://rotate.aero/forum/ata24-md11/226-bus-tie-contactor#436 ATA 24 Electrical Power Thu, 19 Oct 2017 21:25:22 +0000 ATA 27-13, Aileron LVDT Replacement - by: Mike Forti https://rotate.aero/forum/ata22-a-p-md11/149-ata-27-13-aileron-lvdt-replacement#435 https://rotate.aero/forum/ata22-a-p-md11/149-ata-27-13-aileron-lvdt-replacement#435 ATA 22 Auto-Flight Thu, 19 Oct 2017 21:12:57 +0000 Stuck In Air Mode - by: Mike Forti https://rotate.aero/forum/md11-ata32/213-stuck-in-air-mode#382 https://rotate.aero/forum/md11-ata32/213-stuck-in-air-mode#382 ATA 32 Landing Gear Fri, 12 May 2017 11:24:56 +0000 MD 11 Flap Quadrant - by: Mike Forti https://rotate.aero/forum/ata27-flightcontrols-md11/209-md-11-flap-quadrant#354 https://rotate.aero/forum/ata27-flightcontrols-md11/209-md-11-flap-quadrant#354 ATA 27 Flight Controls Mon, 01 May 2017 10:45:04 +0000 ATA 34-63, Flight Management System - by: Mike Forti https://rotate.aero/forum/ata34-md11/203-ata-34-63-flight-management-system#328 https://rotate.aero/forum/ata34-md11/203-ata-34-63-flight-management-system#328 ATA 34 Navigation Fri, 21 Apr 2017 00:15:01 +0000 Directional TCAS Antenna - by: Mark https://rotate.aero/forum/ata34-md11/199-directional-tcas-antenna#314 https://rotate.aero/forum/ata34-md11/199-directional-tcas-antenna#314 ATA 34 Navigation Tue, 18 Apr 2017 03:34:58 +0000 ATA 24-20, A/C Power Control & Monitoring - by: Mark https://rotate.aero/forum/ata24-md11/185-ata-24-20-a-c-power-control-monitoring#296 https://rotate.aero/forum/ata24-md11/185-ata-24-20-a-c-power-control-monitoring#296
Inbound write-up and our action:

PDIS XXX 22-21 5004 21Mar17 IAH U CLOSE

Logpages:XXXXXXXX

ON APPROACH TO KIAH RWY 26L AT APPROXIMITELY
1500 AGL WITH AUTOPILOT DISENGAGED THE LSAS
LEFT INBOARD AND RIGHT OUTBOARD FAIL
ANNUNCIATORS ILLUMINATED IN ADDITION TO BOTH
LOWER YAW DAMPER A&B FAIL LIGHTS ILLUMINATED
UPON CONDUCTING GO AROUND DU'S 2 AND 4
REVERTED TO COMPASS ROSES AND AUTOPILOT
DISCONNECTED . AFTER A COUPLE OF MINUTES THE
LIGHTS EXTINGUISHED ONE BY ONE AND THE
AUTOPILOT WAS REGAINED.

ENT BY: XXXXX RPT BY: XXXXXX

R/I 21Mar17 22:08 IAH U
REASON CODE : PREMATURE REMOVAL/INSTALLATION
OFF
MPN: 750866D POS: ONL
SRL: XXXX TAG NBR: XXXXXX

ON
MPN: 750866D CPN: 2411639
SRL: XXXXXXXXXX TAG NBR: XXXXX

ENT BY: XXXXXX RPT BY: XXXXXX

FACT 21Mar17 22:08 IAH U

DUE TO MULTIPLE LRU ELECTRICAL RELATED FAULTS
REMOVED AND REPLACED EPCU REF AMM 24-08-01-4. RTS
CHECKS NORMAL. EPCU/FCC CAT 3 INTERFACE TEST ON FCC'S
1 & 2 ARE NORMAL. A/C OK FOR SERVICE.

ENT BY: XXXXXX RPT BY: XXXXXX

CFDS showed failures all over the place for the last flight. All three IRS's and DEU's, both FCC's, both Cabin Pressure Controllers, a Radio Alt, and a VHF Comm. Our reaction...... "power" problem, but not a fault one for the EPCU (Electrical Power Control Unit).

We had a EPCU in stock and even though nothing was recorded as it being failed...... we changed it and kicked-um out of town.

On the next flight:

PDIS XXX 24-21 5006 22Mar17 DFW U MEL/CDL

Logpages:XXXXXXXX

TURNING BASE TO FINAL ON RWY 17C GEN 3 OFF LEVEL 1
ALERT ILLUMINATED . QRH PROCEDURE ACCOMPLISHED GEN
3 WOULD NOT RESET. UPON ROLLOUT GEN DRIVE 3 FAULT
LEVEL 2 ALERT ILLUMINATED.

ENT BY: XXXXXX RPT BY: XXXXXX

MEL 22Mar17 00:17 DFW U

RELEASED FOR SERVICE PER MEL : 24-21-01
CATEGORY : B EXPIRATION : 25Mar17
"MEL 24-21-01: NO. #3 IDG - INOP AND
DISCONNECTED. OPERATE ELEC IN AUTO."

C/7088825 ENT BY: XXXXXX RPT BY: XXXXXX

What was perplexing about this was the fact that the #3 generator must of glitched coming into Houston and "nothing" was recorded as a fault. In the case of the arrival here, all the components listed above lost power which was long enough to cause a restart. It's actually a good thing this was on a MD-11 instead of a MD-10. Equipment on MD-11's, power up quickly. MD-10's can take over two minutes to come online.]]>
ATA 24 Electrical Power Wed, 22 Mar 2017 02:46:58 +0000
Forward Window Anti-Icing - by: Mark https://rotate.aero/forum/ata-30-ice-rain-protection-md11/172-forward-window-anti-icing#269 https://rotate.aero/forum/ata-30-ice-rain-protection-md11/172-forward-window-anti-icing#269
With the controller out of rack, pins 10 & 11 of the top plug. Spare sensor switch at third crew member maintenance panel needs to be thrown to read the secondary sensor.

Both window's primary and secondary sensors read 309-315 ohms @ 60 degrees.

AMM 30-41-01-4 for controller R/R and functional check for sign-off.]]>
ATA 30 Ice/Rain Protection Mon, 30 Jan 2017 01:11:35 +0000
Auto-Pilot Elevator Control Valve - by: Mike Forti https://rotate.aero/forum/ata22-a-p-md11/153-auto-pilot-elevator-control-valve#245 https://rotate.aero/forum/ata22-a-p-md11/153-auto-pilot-elevator-control-valve#245 ATA 22 Auto-Flight Sun, 30 Oct 2016 19:55:23 +0000 ATA 27-45, Horizontal Stabilizer Position - by: Mark https://rotate.aero/forum/ata27-flightcontrols-md11/155-ata-27-45-horizontal-stabilizer-position#228 https://rotate.aero/forum/ata27-flightcontrols-md11/155-ata-27-45-horizontal-stabilizer-position#228 LVDT Tutorial ]]> ATA 27 Flight Controls Tue, 27 Sep 2016 17:16:22 +0000 ATA 29-12, Hydralic Pump Low Pressure Switch - by: Mark https://rotate.aero/forum/ata29-hydro-md11/151-ata-29-12-hydralic-pump-low-pressure-switch#222 https://rotate.aero/forum/ata29-hydro-md11/151-ata-29-12-hydralic-pump-low-pressure-switch#222
The location of hydraulic manifold - under right hand T/R half. Switch S1-8120, rear and outboard.



Heat shield must be removed to access switch in case. Upper shield has two halves that can be split. Safety wire inboard and screws around perimeter. One band clamp has to come off also.





Switch exposed. Hex head recessed below lower shield so it's somewhat difficult to place a wrench on flats (a "really" deep socket would of done the trick). Got enough of a bite with a 1-1/8" open-end to get job done.




Removed switch. We had a small amount of Skydrol leaking down during the actual removal, but at least it wasn't puking out.



A leak check is somewhat tricky. You want to see the actual switch and case with pressure on it and you can't light off the engine with the T/R open. What to do?? Well.... you get pump pressure during engine start so a spin-up without putting fuel on will do the trick. A full engine start for a hydraulic test is needed after heat shield installed and T/R closed.

As a note: the left and right low pressure switches are NOT the same part number. Ref IPC 29-12-01-10

AMM 29-12-34-2-2]]>
ATA 29 Hydraulic Systems Mon, 22 Aug 2016 16:58:12 +0000
ATA 29-21, Aux Hydraulic Pump Control - by: Mike Forti https://rotate.aero/forum/ata29-hydro-md11/147-ata-29-21-aux-hydraulic-pump-control#215 https://rotate.aero/forum/ata29-hydro-md11/147-ata-29-21-aux-hydraulic-pump-control#215 ATA 29 Hydraulic Systems Tue, 05 Jul 2016 22:03:58 +0000 ATA 26-11, Engine Fire Detection - by: Mark https://rotate.aero/forum/ata-26-fire-md11/128-ata-26-11-engine-fire-detection#163 https://rotate.aero/forum/ata-26-fire-md11/128-ata-26-11-engine-fire-detection#163
Hard #3 engine fire loop fault in CFDS. No loop section was identified, only the whole loop system.

First things first, down to the detector unit. Two plugs, each wired the same, one for each loop.
Power, ground, and loop resistance. Power 28VDC - pin"A", Ground - pin"B", Loops - pins "J" and "K".

I found good power and ground. I read the readings below for each loop.









Which one is right? Grab a plug from another engine, 1.4KOhms.

I've got a hard open. I'm reading one (of four) loops which just so happens to have a resistance of 6.8K all by its lonesome.

Pop the cowls. Turn on a flashlight. "It" was found pretty quickly.





Snapped loop, just below insulator. I don't recall seeing one snap in half like this, usually it's a wire harness or a loop faults internally.

ATA 26-11-00 Fire Detection
ASM and AMM 26-11-00
]]>
ATA 26 Fire Protection Mon, 21 Mar 2016 03:24:26 +0000
ATA 33-44, Nav Light Transformers - by: Mark https://rotate.aero/forum/md-11-ata33-lights/122-ata-33-44-nav-light-transformers#154 https://rotate.aero/forum/md-11-ata33-lights/122-ata-33-44-nav-light-transformers#154




These function to drop 115VAC down to 10 VAC to power the navigation lights. One transformer each for one forward and one aft light. Basic troubleshooting....... if both lights are on, either forward or aft, the transformers are "not" your problem.


]]>
ATA 33 Lights Tue, 02 Feb 2016 06:52:22 +0000
MD-11 Auto-Pilot EPCU Fault - by: Mark https://rotate.aero/forum/ata22-a-p-md11/121-md-11-auto-pilot-epcu-fault#153 https://rotate.aero/forum/ata22-a-p-md11/121-md-11-auto-pilot-epcu-fault#153

I replaced the RCCB and performed auto-land tests on both FCC's. Both passed, but because of a chronic history, a crew CAT approach will be required.


RCCB R/R, AMM 24-50-01-4
FIM Manual 24-30-05-00 and 22-00 Tasks 874-876
]]>
ATA 22 Auto-Flight Mon, 01 Feb 2016 18:10:20 +0000
Window Defog (Some Measured Values) - by: Mark https://rotate.aero/forum/ata-30-ice-rain-protection-md11/119-window-defog-some-measured-values#146 https://rotate.aero/forum/ata-30-ice-rain-protection-md11/119-window-defog-some-measured-values#146
Just a reference for troubleshooting. All readings from controller cannon plug.
Heater coil, pin "C" to ground.
Sensor, pins "E" and "F".

Front windshield heater coil: Approximately 47 ohms.
Front windshield sensor coil: Approximately 302 ohms.

DV Window: 29 ohms and 300 ohms

Side Window: 18 ohms and 300 ohms.

As a note, readings seemed to flip-flop for DV and Side when comparing left and right. Got 18 for DV and 30 for Side. Plugs were not swapped on the controllers.

MD-11 AMM 30-42-00]]>
ATA 30 Ice/Rain Protection Mon, 11 Jan 2016 03:22:06 +0000
ATA 33-43, MD-11,MD-10,DC-10 Runway Turnoff Light - by: Mark https://rotate.aero/forum/md-11-ata33-lights/93-ata-33-43-md-11-md-10-dc-10-runway-turnoff-light#107 https://rotate.aero/forum/md-11-ata33-lights/93-ata-33-43-md-11-md-10-dc-10-runway-turnoff-light#107
Somebody with some ingenuity wrapped the screw threads with what looks like 3M 27 glass cloth tape. Just the right thickness to secure the stand-off, but not so tight that it couldn't be pulled off.

No more struggling to position and start the screws and having the stand-offs fall off before the screw is seated.



MD-11 AMM 33-43-01]]>
ATA 33 Lights Wed, 20 May 2015 18:26:17 +0000