06/30/21
Message Overview:
Message Name:
FUSELAGE STROBE/ANTICOLLISION BEACON LIGHTS UNSERVICEABLE
| Message Code: | 334OBS004 |
| Effectivity: | All |
| System: | Strobe Lighting System |
| System Description: | 33-43-00 |
| Schematic Diagram: | 33-43-00 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wiring Diagram: | 30-43-01 [ Global Express ] [ G5000 ] [ Global XRS ] |
Message Description:
Fuselage Strobe/Anticollision (BEACON) Light or Lights do not operate correctly.
Possible Causes:
- Upper Fuselage Strobe Light (DS64)
- Lower Fuselage Strobe Light (DS65)
- Upper Fuselage Beacon Light Power Supply (A148)
- Lower Fuselage Beacon Light Power Supply (A119)
- External Lights Control Panel (AP11)
- Beacon Light Switch (S2)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
Quick Links:
| Connect Electrical Power to the Aircraft | AMM 24-00-00-861-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Remove the Electrical Power from the Aircraft | AMM 24-00-00-861-802 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Opening of Non-Thermal Circuit Breakers | AMM 24-00-00-863-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Closing of Non-Thermal Circuit Breakers | AMM 24-00-00-863-802 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Electrical/Electronic Safety Precautions | AMM 24-00-00-910-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the EXTERNAL LIGHTS Control Panel | AMM 33-40-01-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the EXTERNAL LIGHTS Control Panel | AMM 33-40-01-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Fuselage Strobe/Anticollision Lights | AMM 33-43-09-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Fuselage Strobe/Anticollision Lights | AMM 33-43-09-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Operational Test of the Fuselage-Strobe/Anticollision Lights | AMM 33-43-09-710-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Safety Precautions - Maintenance Practices - ALL | SPM 20-00-01-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
WARNING: Set the strobe switch to the off position before you disconnect the connectors. The measurements with the power applied to the wing-strobe power-supplies must be done very carefully. There is 400 VDC applied to the connectors during this operation. The high voltage can cause death or injury to personnel and/or damage to equipment.
- Set the BEACON switch to ON and check If all the fuselage strobe lights operate.
- If all the fuselage strobe lights do not operate, replace the external lights control panel and do close out.
- If all the fuselage strobe lights operate, continue with the next step.
- Perform a 400 VAC voltage check at the connector DS64P1 for the upper fuselage strobe/anti-collision light and DS65P1 for the lower fuselage strobe/anti-collision light as follows:
From To Expected Result Result DS64P1-A Ground 400 VAC anode voltage DS64P1-B Ground 400 VAC 1 ±0.16 Hz cathode pulse DS65P1-A Ground 400 VAC anode voltage DS65P1-B Ground 400 VAC 1 ±0.16 Hz cathode pulse - If there is voltage, replace the fuselage strobe/anti-collision light and do close out.
- If there is no voltage, continue with the next step.
- Check If the fuselage strobe/anti-collision light power-supply is serviceable.
- If it is serviceable, repair the defective wiring as required and do close out.
- If it is not serviceable, continue with next step.
- Replace the defective power supply.
- If fault remains, repair the defective wiring of external lights control panel as required and do close out.
- If system checks are good, continue with next step.
- Perform the troubleshooting for CAS Message listed below:
- Do close out.