Emb-135 crew did not insure all 4 landing gear lock pins were removed before departure.

Attributes
ACN	600603
Time
Date	200311
Day	Mon
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 135 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	600603
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	600601
Events
Anomaly	aircraft equipment problem : less severe non adherence : company policies non adherence : far non adherence : published procedure
Independent Detector	other other : 3
Resolutory Action	other
Consequence	other
Supplementary
Problem Areas	Company Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Crew arrived at about 10 mins before scheduled departure. First officer did walkaround while captain prepared cockpit and started paperwork. Crew ran origination checklist and before checklists. Captain noticed gear pins behind seat during checklist and thought all 4 were there. After pushback complete, and while ramper was disconnecting, he informed crew that a red flag was visible in nosewheel well. Crew looked at gear pins again and shuffled the red flags around and noticed then only 3 pins were on board. First officer stated that the gear pins were not installed in the gear. I asked if the 4TH pin was installed and he was unsure maintenance was called to remove pin and flight departed.

Original NASA ASRS Text

Title: EMB-135 CREW DID NOT INSURE ALL 4 LNDG GEAR LOCK PINS WERE REMOVED BEFORE DEP.

Narrative: CREW ARRIVED AT ABOUT 10 MINS BEFORE SCHEDULED DEP. FO DID WALKAROUND WHILE CAPT PREPARED COCKPIT AND STARTED PAPERWORK. CREW RAN ORIGINATION CHKLIST AND BEFORE CHKLISTS. CAPT NOTICED GEAR PINS BEHIND SEAT DURING CHKLIST AND THOUGHT ALL 4 WERE THERE. AFTER PUSHBACK COMPLETE, AND WHILE RAMPER WAS DISCONNECTING, HE INFORMED CREW THAT A RED FLAG WAS VISIBLE IN NOSEWHEEL WELL. CREW LOOKED AT GEAR PINS AGAIN AND SHUFFLED THE RED FLAGS AROUND AND NOTICED THEN ONLY 3 PINS WERE ON BOARD. FO STATED THAT THE GEAR PINS WERE NOT INSTALLED IN THE GEAR. I ASKED IF THE 4TH PIN WAS INSTALLED AND HE WAS UNSURE MAINT WAS CALLED TO REMOVE PIN AND FLT DEPARTED.

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.