Air carrier medium large transport had gear down indicator light problem and after replacing the bul...

Attributes
ACN	152794
Time
Date	199007
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bgm
State Reference	NY
Altitude	agl bound lower : 0 agl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bgm
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 138 flight time total : 11000 flight time type : 357
ASRS Report	152794
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe inflight encounter : weather
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : overcame equipment problem flight crew : declared emergency
Consequence	Other
Supplementary
Primary Problem	Weather

Narrative:

We were cleared for approach to ILS 16 (G/south, OTS). Put gear down and did checklist. Waiting on green lights for gear, we were on short final. There was no green lights on the right main gear. I told tower I was doing a low pass and ask him if he saw a right main gear out. He said yes but, that didn't mean it was lock. I requested a downwind approach and changed to bulbs. We got 5 green lights. (All down and lock now). I requested a visibility approach. Told tower that everything was all right and we have green indications on all the gear. He (tower) said clear to land the trucks are by the runway waiting. I said we don't need them and didn't declare an emergency. He said I called them out and they are waiting by the runway. Everything was fine. Called company maintenance control made log book entry. Check bulbs and gear. Everything was fine. Next flight flying from bgm to pit. Climbing out, gear up. We heard a popping noise in cockpit. It would pop and the lights, radar, and instruments would flick to off and right back on. The flicking was only twice. The popping noise continued for about 30 mins. During this time all indications were good. (Generators and loads were good). Good WX in pit. Continued and landed. Maintenance grounded the plane. The problem was the plane had been hit by lightning and we didn't know it.

Original NASA ASRS Text

Title: ACR MLG HAD GEAR DOWN INDICATOR LIGHT PROBLEM AND AFTER REPLACING THE BULBS INDICATINS WERE NORMAL. TWR CALLED OUT EMERGENCY GND EQUIPMENT AS A SAFETY BACK UP. ON THE NEXT LEG THE FLT CREW OBSERVED INTERMITTENT ELECTRICAL MALFUNCTIONS THAT SOLVED THEMSELVES.

Narrative: WE WERE CLRED FOR APCH TO ILS 16 (G/S, OTS). PUT GEAR DOWN AND DID CHKLIST. WAITING ON GREEN LIGHTS FOR GEAR, WE WERE ON SHORT FINAL. THERE WAS NO GREEN LIGHTS ON THE R MAIN GEAR. I TOLD TWR I WAS DOING A LOW PASS AND ASK HIM IF HE SAW A R MAIN GEAR OUT. HE SAID YES BUT, THAT DIDN'T MEAN IT WAS LOCK. I REQUESTED A DOWNWIND APCH AND CHANGED TO BULBS. WE GOT 5 GREEN LIGHTS. (ALL DOWN AND LOCK NOW). I REQUESTED A VIS APCH. TOLD TWR THAT EVERYTHING WAS ALL RIGHT AND WE HAVE GREEN INDICATIONS ON ALL THE GEAR. HE (TWR) SAID CLR TO LAND THE TRUCKS ARE BY THE RWY WAITING. I SAID WE DON'T NEED THEM AND DIDN'T DECLARE AN EMER. HE SAID I CALLED THEM OUT AND THEY ARE WAITING BY THE RWY. EVERYTHING WAS FINE. CALLED COMPANY MAINT CTL MADE LOG BOOK ENTRY. CHK BULBS AND GEAR. EVERYTHING WAS FINE. NEXT FLT FLYING FROM BGM TO PIT. CLBING OUT, GEAR UP. WE HEARD A POPPING NOISE IN COCKPIT. IT WOULD POP AND THE LIGHTS, RADAR, AND INSTRUMENTS WOULD FLICK TO OFF AND RIGHT BACK ON. THE FLICKING WAS ONLY TWICE. THE POPPING NOISE CONTINUED FOR ABOUT 30 MINS. DURING THIS TIME ALL INDICATIONS WERE GOOD. (GENERATORS AND LOADS WERE GOOD). GOOD WX IN PIT. CONTINUED AND LANDED. MAINT GNDED THE PLANE. THE PROB WAS THE PLANE HAD BEEN HIT BY LIGHTNING AND WE DIDN'T KNOW IT.

Data retrieved from NASA's ASRS site as of July 2007 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.

Air carrier medium large transport had gear down indicator light problem and after replacing the bulbs indicatins were normal. Tower called out emergency ground equipment as a safety back up. On the next leg the flight crew observed intermittent electrical malfunctions that solved themselves.