Unsafe indication after landing gear extension. Visually checked normal.

Attributes
ACN	134162
Time
Date	199001
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : atl
State Reference	GA
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : atl
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp
Experience	flight time last 90 days : 120 flight time total : 12000 flight time type : 4800
ASRS Report	134162
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : atp
Experience	flight time last 90 days : 200 flight time total : 5000 flight time type : 900
ASRS Report	134534
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

Ferry flight to atl after maintenance in ord for a blown left main tire. No passenger, no cargo. On approach to runway 8L in atl, landing weight 76000 pounds, placed landing gear lever down, right and nose landing gear down and locked (green lights), left main gear unsafe (no green light, red unsafe light on). Hydraulic pressures and qtys good. Left gear handle down, performed go around, entered holding at tempo intersection at 5000' MSL. Contacted dispatcher and maintenance controller. Maintenance felt problem was connected to blown tire incident in ord. Performed abnormal procedure for 'gear unsafe light illuminates gear handle down.' unable to get 3 green. First officer visually inspected landing gear down and locked. Informed approach control and company of visually checked gear down. Proceeded to atl for ILS 8L approach and made successful landing.

Original NASA ASRS Text

Title: UNSAFE INDICATION AFTER LNDG GEAR EXTENSION. VISUALLY CHECKED NORMAL.

Narrative: FERRY FLT TO ATL AFTER MAINT IN ORD FOR A BLOWN LEFT MAIN TIRE. NO PAX, NO CARGO. ON APCH TO RWY 8L IN ATL, LNDG WT 76000 LBS, PLACED LNDG GEAR LEVER DOWN, RIGHT AND NOSE LNDG GEAR DOWN AND LOCKED (GREEN LIGHTS), LEFT MAIN GEAR UNSAFE (NO GREEN LIGHT, RED UNSAFE LIGHT ON). HYD PRESSURES AND QTYS GOOD. LEFT GEAR HANDLE DOWN, PERFORMED GO AROUND, ENTERED HOLDING AT TEMPO INTXN AT 5000' MSL. CONTACTED DISPATCHER AND MAINT CTLR. MAINT FELT PROB WAS CONNECTED TO BLOWN TIRE INCIDENT IN ORD. PERFORMED ABNORMAL PROC FOR 'GEAR UNSAFE LIGHT ILLUMINATES GEAR HANDLE DOWN.' UNABLE TO GET 3 GREEN. F/O VISUALLY INSPECTED LNDG GEAR DOWN AND LOCKED. INFORMED APCH CTL AND COMPANY OF VISUALLY CHKED GEAR DOWN. PROCEEDED TO ATL FOR ILS 8L APCH AND MADE SUCCESSFUL LNDG.

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.