Medium large transport is discovered to have FOD from blue ice. Not certain where it occurred.

Attributes
ACN	245107
Time
Date	199306
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : smf
State Reference	CA
Altitude	msl bound lower : 33000 msl bound upper : 33000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zoa
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other ground : parked landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : instrument pilot : private pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 210 flight time total : 7000 flight time type : 1500
ASRS Report	245107
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

After leg 1 (landing at smf) I noticed a blue water leak and ice behind the panel of the forward lavatory service panel. A mechanic was with me. He said it was from the input line and was very small. He replaced the input line cap, although the leak appeared to have stopped even before the new cap was put on. Since the engine ran well throughout the flight, I didn't think about having the mechanic check the engine. He also didn't think about the engine and potential for blue ice FOD. Nothing was entered in the aircraft log. Leg 2 was uneventful. At the completion of leg 2 I told the mechanic receiving the flight what had transpired at smf. I don't know if he checked the engine or not. It did run well on leg 2. The mechanic drained the forward lavatory, blocked it off, and made appropriate logbook entry. Leg 3 was uneventful, and the engines ran well. But, damage to the #1 fan was discovered during the overnight inspection. Maybe the damage was done on leg 3, and maybe it was done on leg 1 or 2. I don't know. I do think my judgement was flawed because I didn't order a mechanic to inspect the hard to access #1 engine, after the first or second leg.

Original NASA ASRS Text

Title: MLG IS DISCOVERED TO HAVE FOD FROM BLUE ICE. NOT CERTAIN WHERE IT OCCURRED.

Narrative: AFTER LEG 1 (LNDG AT SMF) I NOTICED A BLUE WATER LEAK AND ICE BEHIND THE PANEL OF THE FORWARD LAVATORY SVC PANEL. A MECH WAS WITH ME. HE SAID IT WAS FROM THE INPUT LINE AND WAS VERY SMALL. HE REPLACED THE INPUT LINE CAP, ALTHOUGH THE LEAK APPEARED TO HAVE STOPPED EVEN BEFORE THE NEW CAP WAS PUT ON. SINCE THE ENG RAN WELL THROUGHOUT THE FLT, I DIDN'T THINK ABOUT HAVING THE MECH CHK THE ENG. HE ALSO DIDN'T THINK ABOUT THE ENG AND POTENTIAL FOR BLUE ICE FOD. NOTHING WAS ENTERED IN THE ACFT LOG. LEG 2 WAS UNEVENTFUL. AT THE COMPLETION OF LEG 2 I TOLD THE MECH RECEIVING THE FLT WHAT HAD TRANSPIRED AT SMF. I DON'T KNOW IF HE CHKED THE ENG OR NOT. IT DID RUN WELL ON LEG 2. THE MECH DRAINED THE FORWARD LAVATORY, BLOCKED IT OFF, AND MADE APPROPRIATE LOGBOOK ENTRY. LEG 3 WAS UNEVENTFUL, AND THE ENGS RAN WELL. BUT, DAMAGE TO THE #1 FAN WAS DISCOVERED DURING THE OVERNIGHT INSPECTION. MAYBE THE DAMAGE WAS DONE ON LEG 3, AND MAYBE IT WAS DONE ON LEG 1 OR 2. I DON'T KNOW. I DO THINK MY JUDGEMENT WAS FLAWED BECAUSE I DIDN'T ORDER A MECH TO INSPECT THE HARD TO ACCESS #1 ENG, AFTER THE FIRST OR SECOND LEG.

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.