06/30/21
Message Overview:
Message Name:
TAIL STROBE LIGHT UNSERVICEABLE
| Message Code: | 334OBS013 |
| Effectivity: | All |
| System: | Strobe Lighting |
| System Description: | 33-43-00 |
| Schematic Diagram: | 33-43-00 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wiring Diagram: | 33-43-01 [ Global Express ] [ G5000 ] [ Global XRS ] |
Message Description:
Tail Strobe Light does not operate correctly.
Possible Causes:
- Tail Strobe Light Bulb
- Tail Strobe Light (DS68)
- Tail Strobe Light Power Supply (A127)
- External Lights Control Panel (AP11)
- Strobe Light Switch (S3)
- 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 ] |
| Operational Test of the Strobe Lights | AMM 33-43-00-710-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Tail Strobe Light | AMM 33-43-05-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Tail Strobe Light | AMM 33-43-05-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Replacement of the Secondary Tail Nav Light-Bulb | AMM 33-43-05-960-802 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Tail Strobe-Light Power-Supply | AMM 33-44-01-000-802 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Tail Strobe-Light Power-Supply | AMM 33-44-01-400-802 [ 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:
- Set the STROBE switch to ON and check if all the wing/tail strobe lights operate.
- If all the wing/tail strobe lights do not operate, replace the external lights control panel and do close out.
- If all the wing/tail strobe lights operate, continue with next step.
- Perform a voltage check at the connector DS68P1 as follows:
From To Expected Result Result DS68P1-A DS68P1-F 400 VAC anode voltage DS68P1-B DS68P1-F 400 VAC 1 ± 0.08 Hz cathode pulse - If there is voltage, go to step 5.
- If there is no voltage, continue with next step.
- Replace the tail strobe light-bulb.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Replace the tail strobe light assembly.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Check if the tail strobe light power-supply unit A127 is serviceable.
- If it is serviceable, replace the defective wiring of the power supply as required and do close out.
- If it is not serviceable, continue with next step.
- Replace the defective power supply.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Perform a wiring check within external lights control panel.
- If wiring checks are not good, repair defective wiring as required and do close out.
- If wiring checks are good, continue with next step.
- Perform the troubleshooting for CAS Message listed below:
- Do close out.