<< >> NASA ASRS Report 337632, June 1996

An air carrier B727 freighter landed with its nosewheel steering disabled. Maintenance personnel connected the steering linkage properly and the aircraft was able to taxi.

Attributes
ACN	337632
Time
Date	199606
Day	Tue
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : mem
State Reference	TN
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument pilot : flight engineer
Experience	flight time last 90 days : 120 flight time total : 18000 flight time type : 10000
ASRS Report	337632
Person 2
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : atp pilot : flight engineer pilot : cfi
Experience	flight time last 90 days : 150 flight time total : 10600 flight time type : 240
ASRS Report	337987
Events
Anomaly	aircraft equipment problem : critical non adherence : published procedure other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem flight crew : regained aircraft control other
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Normal touchdown, normal rollout. At 100 KTS, strong vibration began, growing progressively worse. Aircraft nearly uncontrollable. Nosewheel steering completely ineffective. Used maximum braking/reverse thrust to slow aircraft and differential braking to keep it on the runway. My first thoughts were that some tires had blown. Shut down on the runway. Our mechanics said the nosewheel steering locking pin had not been locked by departure ramp at sfo. Pin reinstalled and we taxied to our ramp. Further inspection revealed that the nosewheel tires had been damaged (tower reported seeing a 'glow' from the nosewheel area on rollout) by the pin assembly rubbing on them at high speed.

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Original NASA ASRS Text

Title: AN ACR B727 FREIGHTER LANDED WITH ITS NOSEWHEEL STEERING DISABLED. MAINT PERSONNEL CONNECTED THE STEERING LINKAGE PROPERLY AND THE ACFT WAS ABLE TO TAXI.

Narrative: NORMAL TOUCHDOWN, NORMAL ROLLOUT. AT 100 KTS, STRONG VIBRATION BEGAN, GROWING PROGRESSIVELY WORSE. ACFT NEARLY UNCTLABLE. NOSEWHEEL STEERING COMPLETELY INEFFECTIVE. USED MAX BRAKING/REVERSE THRUST TO SLOW ACFT AND DIFFERENTIAL BRAKING TO KEEP IT ON THE RWY. MY FIRST THOUGHTS WERE THAT SOME TIRES HAD BLOWN. SHUT DOWN ON THE RWY. OUR MECHS SAID THE NOSEWHEEL STEERING LOCKING PIN HAD NOT BEEN LOCKED BY DEP RAMP AT SFO. PIN REINSTALLED AND WE TAXIED TO OUR RAMP. FURTHER INSPECTION REVEALED THAT THE NOSEWHEEL TIRES HAD BEEN DAMAGED (TWR RPTED SEEING A 'GLOW' FROM THE NOSEWHEEL AREA ON ROLLOUT) BY THE PIN ASSEMBLY RUBBING ON THEM AT HIGH SPD.

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.