A B727-200 FLT LANDS IN AN EMER CONDITION; AFTER CHKLIST USE; WHEN THE NOSE GEAR INDICATING SYS WARNS CREW OF AN UNLOCKED NOSE GEAR AT DTW; MI.

2000-01 · NASA ASRS report 460321

Date: 2000-01 · Aircraft: B727-200

Anomalies: aircraft-equipment-problem-critical|other-false-warning

Synopsis

A B727-200 FLT LANDS IN AN EMER CONDITION; AFTER CHKLIST USE; WHEN THE NOSE GEAR INDICATING SYS WARNS CREW OF AN UNLOCKED NOSE GEAR AT DTW; MI.

Narrative

AT OM; EXTENDED LNDG GEAR; SOUNDED NORMAL; BUT RED GEAR UNSAFE (RED) LIGHT ILLUMINATED. CYCLED GEAR; SAME RESULT. INITIATED GAR WITH CLRNC E OF ARPT TO ACCOMPLISH PUBLISHED ABNORMAL PROC. ALTHOUGH MY CREW MEMBERS WERE RELATIVELY NEW -- FO 2 YRS; SO 8 MONTHS -- TRAINING AND STANDARDIZATION AT MY AIRLINE WERE INSTRUMENTAL IN THE SMOOTH COMPLETION OF THE PROC FOLLOWED BY A SAFE LNDG. THE SO WAS NOT TOTALLY SURE THAT WHAT HE SAW IN NOSE GEAR VIEWPORT WAS CORRECT. THE FO FLEW THE ACFT WHILE I WORKED WITH SO TO COMPLETE ABNORMAL. AFTER SO WAS IN HIS SEAT; I WENT BACK TO LOOK AT THE VIEWPORT. THE GEAR WAS DOWN AND LOCKED. AS A PRECAUTION; I BRIEFED THE LEAD FLT ATTENDANT OF THE SIT AND TO PREPARE THE CABIN FOR AN EMER LNDG; AND RETURNED TO THE COCKPIT. IT WAS THE FO'S LEG; BUT THE CIRCUMSTANCES WERE SUCH THAT I THOUGHT I SHOULD MAKE THE LNDG. THE CRM TRAINING WE ALL HAVE RECEIVED WAS ALSO A CONTRIBUTING FACTOR TO THE SUCCESS OF THIS EVENT. WE OPENLY DISCUSSED WHAT HAD TRANSPIRED AS I WANTED EVERYONE TO BE COMFORTABLE WITH OUR SIT. WE ALL FELT THAT WE DID EVERYTHING CORRECTLY AND CONSERVATIVELY; SO WE PROCEEDED TO THE FIELD (DTW). LNDG WAS UNEVENTFUL. STOPPED ON RWY; SET BRAKES. DID NOT MOVE ANY HYD COMPONENTS (FLAPS; SPOILERS; ETC) UNTIL THE GEAR WAS PINNED IN ACCORDANCE WITH ABNORMAL PROC. AFTER GEAR LOCKS WERE PINNED; COMPLETED AFTER LNDG CHK; CLRED RWY; TAXIED TO TERMINAL. THANK YOU STANDARDIZATION. THANK YOU CRM.

Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.

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