Pilot reports of problems associated with landing and led lights flashing while on final.

Attributes
ACN	1225704
Time
Date	201412
Local Time Of Day	1201-1800
Place
Locale Reference	BGF.Airport
State Reference	TN
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Small Aircraft
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Route In Use	Direct
Flight Plan	None
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Engineer Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 50 Flight Crew Total 10000 Flight Crew Type 500
Events
Anomaly	Inflight Event / Encounter Other / Unknown

Narrative:

While landing at the winchester airport (bgf) on runway 18 at night with the runway lights set to medium intensity the new led runway lights began to flash. As I continued the approach; I noted that the flashing was as a result of my fluctuating the propeller RPM. FYI; my airplane has a 3 bladed propeller. As I adjusted the propeller RPM on the approach; at in and around 22-2300 RPM; the runway lights could be dimmed to near off. As the RPM fluctuated; the flashing rate could be adjusted! At times of low visibility on a dark night; this could be catastrophic! When the pilot is just breaking out of the weather; the dimming or flashing of the runway lights could be conceived at re-entering the weather causing a go around.

Original NASA ASRS Text

Title: Pilot reports of problems associated with landing and LED lights flashing while on final.

Narrative: While landing at the Winchester airport (BGF) on runway 18 at night with the runway lights set to medium intensity the new LED runway lights began to flash. As I continued the approach; I noted that the flashing was as a result of my fluctuating the propeller RPM. FYI; my airplane has a 3 bladed propeller. As I adjusted the propeller RPM on the approach; at in and around 22-2300 RPM; the runway lights could be dimmed to near off. As the RPM fluctuated; the flashing rate could be adjusted! At times of low visibility on a dark night; this could be catastrophic! When the pilot is just breaking out of the weather; the dimming or flashing of the runway lights could be conceived at re-entering the weather causing a go around.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.